{"id":4656,"date":"2022-09-26T14:10:37","date_gmt":"2022-09-26T14:10:37","guid":{"rendered":"https:\/\/www.studyzonebd.com\/math\/?p=4656"},"modified":"2022-09-26T14:14:13","modified_gmt":"2022-09-26T14:14:13","slug":"class-7-chapter-09-lesson-9-1","status":"publish","type":"post","link":"https:\/\/www.studyzonebd.com\/math\/class-7-chapter-09-lesson-9-1\/","title":{"rendered":"\u09ef\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ef.\u09e7 | \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf"},"content":{"rendered":"\n

\u09ef\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c | \u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 | Class Seven (07) Math <\/a>Book Solution | Chapter <\/a>09 : Triangles | Class 7 math book Online Solution in bangladesh (bd)<\/p>\n\n\n\n

\u09ef\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ef.\u09e7: \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u09ae\u09a7\u09cd\u09af\u09ae\u09be-\u0989\u099a\u09cd\u099a\u09a4\u09be \u0993 \u0995\u09cb\u09a3\u09c7\u09b0 \u09ae\u09be\u09a8 \u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc<\/h4>\n\n\n\n

\u09ef\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ef.\u09e7 \u098f\u09b0 \u09b8\u0995\u09b2 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8 \u0993 \u0989\u09a4\u09cd\u09a4\u09b0 \u098f\u0996\u09be\u09a8\u09c7 \u09b0\u09df\u09c7\u099b\u09c7\u0964 \u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09be\u09a7\u09be\u09a8<\/p>\n\n\n\n

\u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf\u09b0 \u0997\u09a3\u09bf\u09a4 \u09ef\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ef.\u09e7 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8 \u0993 \u09b8\u09ae\u09be\u09a7\u09be\u09a8<\/strong><\/span><\/h4>\n\n\n\n

\u09e7<\/strong>. <\/strong>\u2220<\/strong>ABD, <\/strong>\u2220<\/strong>CBD <\/strong>\u098f\u09ac\u0982<\/strong> <\/strong>\u2220<\/strong>ADB <\/strong>\u098f\u09b0<\/strong> <\/strong>\u09ae\u09be\u09a8<\/strong> <\/strong>\u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc<\/strong> <\/strong>\u0995\u09b0\u0964<\/strong><\/a><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/p>\n\n\n\n

\u099a\u09bf\u09a4\u09cd\u09b0\u09c7, \u25b3ABC \u098f\u09b0
\u2220ABC=900<\/sup>, \u2220BAC=480
<\/sup>\u2234BD\u22a5AC.
\u2234\u2220ADB=900 <\/sup>\u098f\u09ac\u0982 \u2220ABD=900<\/sup>-480<\/sup>=420
<\/sup>\u0986\u09ac\u09be\u09b0, \u2220CBD=\u2220ABC-\u2220ADB=900<\/sup>-420<\/sup>=480<\/sup><\/p>\n\n\n\n

\u09e8.\u00a0\u098f\u0995\u099f\u09bf\u00a0\u09b8\u09ae\u09a6\u09cd\u09ac\u09bf\u09ac\u09be\u09b9\u09c1\u00a0\u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0\u00a0\u09b6\u09c0\u09b0\u09cd\u09b7\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u09a4\u09c7\u00a0\u0985\u09ac\u09b8\u09cd\u09a5\u09bf\u09a4\u00a0\u0995\u09cb\u09a3\u099f\u09bf\u09b0\u00a0\u09ae\u09be\u09a8\u00a0500<\/sup>\u00a0\u0964\u00a0\u0985\u09ac\u09b6\u09bf\u09b7\u09cd\u099f\u00a0\u0995\u09cb\u09a3\u00a0\u09a6\u09c1\u0987\u099f\u09bf\u09b0\u00a0\u09ae\u09be\u09a8\u00a0\u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc\u00a0\u0995\u09b0\u0964<\/strong><\/a><\/a><\/a><\/a><\/a><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/p>\n\n\n\n

ABC \u09b8\u09ae\u09a6\u09cd\u09ac\u09bf\u09ac\u09be\u09b9\u09c1 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 A \u09b6\u09c0\u09b0\u09cd\u09b7 \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0964 \u2220A=500
<\/sup>\u0986\u09ae\u09b0\u09be \u099c\u09be\u09a8\u09bf, \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u09a4\u09bf\u09a8 \u0995\u09cb\u09a3\u09c7\u09b0 \u09b8\u09ae\u09b7\u09cd\u099f\u09bf=1800
<\/sup>\u098f\u0996\u09be\u09a8\u09c7, \u2220A+\u2220B+\u2220C=1800
<\/sup>\u09ac\u09be, 500<\/sup>+\u2220B+\u2220C=1800
<\/sup>\u09ac\u09be, \u2220B+\u2220C=1800<\/sup>-500<\/sup>=1300
<\/sup>\u0986\u09ac\u09be\u09b0, \u25b3ABC \u098f\u09b0  AB=AC
\u09b8\u09c1\u09a4\u09b0\u09be\u0982, \u2220B=\u2220C
\u098f\u0996\u09a8, \u2220B+\u2220C=1300
<\/sup>\u09ac\u09be, \u2220B+\u2220B=1300
<\/sup>\u09ac\u09be, 2\u2220B=1300
<\/sup>\u09ac\u09be,  \u2220B=1300<\/sup>\/2=650
<\/sup>\u2234\u25b3ABC \u2220B=\u2220C=650<\/sup><\/p>\n\n\n\n

\u09e9<\/strong>. <\/strong>\u09aa\u09cd\u09b0\u09ae\u09be\u09a8<\/strong> <\/strong>\u0995\u09b0<\/strong> <\/strong>\u09af\u09c7<\/strong>, <\/strong>\u099a\u09a4\u09c1\u09b0\u09cd\u09ad\u09c1\u099c\u09c7\u09b0<\/strong> <\/strong>\u099a\u09be\u09b0\u099f\u09bf<\/strong> <\/strong>\u0995\u09cb\u09a3\u09c7\u09b0<\/strong> <\/strong>\u09b8\u09ae\u09b7\u09cd\u099f\u09bf<\/strong> <\/strong>\u099a\u09be\u09b0<\/strong> <\/strong>\u09b8\u09ae\u0995\u09cb\u09a3\u09c7\u09b0<\/strong> <\/strong>\u09b8\u09ae\u09be\u09a8\u0964<\/strong><\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/p>\n\n\n\n

\u09ac\u09bf\u09b6\u09c7\u09b7<\/strong> <\/strong>\u09a8\u09bf\u09b0\u09cd\u09ac\u09be\u099a\u09a3\u0983<\/strong><\/p>\n\n\n\n

\u09ae\u09a8\u09c7 \u0995\u09b0\u09bf, ABCD \u098f\u0995\u099f\u09bf \u099a\u09a4\u09c1\u09b0\u09cd\u09ad\u09c1\u099c\u0964 \u09aa\u09cd\u09b0\u09ae\u09be\u09a8 \u0995\u09b0\u09a4\u09c7 \u09b9\u09ac\u09c7 \u09af\u09c7, \u098f\u09b0 \u099a\u09be\u09b0\u099f\u09bf \u0995\u09cb\u09a3\u09c7\u09b0 \u09b8\u09ae\u09b7\u09cd\u099f\u09bf \u099a\u09be\u09b0 \u09b8\u09ae\u0995\u09cb\u09a8 \u0985\u09b0\u09cd\u09a5\u09be\u09ce \u2220A+\u2220B+\u2220C+\u2220D=\u099a\u09be\u09b0 \u09b8\u09ae\u0995\u09cb\u09a3\u0964<\/p>\n\n\n\n

\u0985\u0999\u09cd\u0995\u09a8\u0983<\/strong> A, C \u09af\u09cb\u0997 \u0995\u09b0\u09bf\u0964<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

<\/a><\/a><\/a><\/a><\/a>\u09aa\u09cd\u09b0\u09ae\u09be\u09a3\u0983<\/strong><\/p>\n\n\n\n

\u25b3ABC \u098f \u2220B+\u2220BAC+\u2220BCA= 2 \u09b8\u09ae\u0995\u09cb\u09a3\u2026\u2026\u2026\u2026\u2026.(\u09e7)
\u25b3ACD \u098f \u2220D+\u2220DAC+\u2220DCA= 2 \u09b8\u09ae\u0995\u09cb\u09a3\u2026\u2026\u2026\u2026…(\u09e8)
(\u09e7)+(\u09e8) \u0995\u09b0\u09c7 \u09aa\u09be\u0987,
\u2220\u2220B+\u2220BAC+\u2220BCA +\u2220D+\u2220DAC+\u2220DCA = 4 \u09b8\u09ae\u0995\u09cb\u09a3
\u09ac\u09be, \u2220DAC+\u2220BAC+\u2220B+\u2220BCA+\u2220DCA+\u2220D= 4 \u09b8\u09ae\u0995\u09cb\u09a3
\u09ac\u09be, \u2220A+\u2220B+\u2220C+\u2220D= 4 \u09b8\u09ae\u0995\u09cb\u09a3 (\u09aa\u09cd\u09b0\u09ae\u09be\u09a3\u09bf\u09a4)<\/p>\n\n\n\n

\u09ea<\/strong>. <\/strong>\u09a6\u09c1\u0987\u099f\u09bf<\/strong> <\/strong>\u09b0\u09c7\u0996\u09be<\/strong> PQ <\/strong>\u098f\u09ac\u0982<\/strong> RS <\/strong>\u09aa\u09b0\u09b8\u09cd\u09aa\u09b0<\/strong> O <\/strong>\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u09a4\u09c7<\/strong> <\/strong>\u099b\u09c7\u09a6<\/strong> <\/strong>\u0995\u09b0\u09c7\u0964<\/strong> PQ <\/strong>\u098f\u09ac\u0982<\/strong> RS <\/strong>\u098f\u09b0<\/strong> <\/strong>\u0989\u09aa\u09b0<\/strong> <\/strong>\u09af\u09a5\u09be\u0995\u09cd\u09b0\u09ae\u09c7<\/strong> L <\/strong>\u0993<\/strong> M <\/strong>\u098f\u09ac\u0982<\/strong> E <\/strong>\u0993<\/strong> F <\/strong>\u099a\u09be\u09b0\u099f\u09bf<\/strong> <\/strong>\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1<\/strong>, <\/strong>\u09af\u09c7\u09a8<\/strong>, LM<\/strong>\u22a5<\/strong>RS, EF<\/strong>\u22a5<\/strong>PQ. <\/strong> <\/strong>\u09aa\u09cd\u09b0\u09ae\u09be\u09a8<\/strong> <\/strong>\u0995\u09b0<\/strong> <\/strong>\u09af\u09c7<\/strong>, <\/strong>\u2220<\/strong>MLO=<\/strong>\u2220<\/strong>FEO.<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/p>\n\n\n\n

\u09ac\u09bf\u09b6\u09c7\u09b7<\/strong> <\/strong>\u09a8\u09bf\u09b0\u09cd\u09ac\u09be\u099a\u09a8\u0983<\/strong><\/p>\n\n\n\n

\u09ae\u09a8\u09c7 \u0995\u09b0\u09bf, PQ \u098f\u09ac\u0982 RS \u09b0\u09c7\u0996\u09be\u0982\u09b6 \u09a6\u09c1\u0987\u099f\u09bf \u09aa\u09b0\u09b8\u09cd\u09aa\u09b0 O \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u09a4\u09c7 \u099b\u09c7\u09a6 \u0995\u09b0\u09c7\u099b\u09c7\u0964 LM\u22a5RS \u098f\u09ac\u0982 EF\u22a5PQ. \u09aa\u09cd\u09b0\u09ae\u09be\u09a8 \u0995\u09b0\u09a4\u09c7 \u09b9\u09ac\u09c7 \u09af\u09c7,  \u2220MLO=\u2220FEO<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u09aa\u09cd\u09b0\u09ae\u09be\u09a3\u0983<\/strong><\/p>\n\n\n\n

LM \u0993 EF  \u09b2\u09ae\u09cd\u09ac \u09b9\u0993\u09af\u09bc\u09be\u09af\u09bc LMO \u0993 EFO \u09a6\u09c1\u0987\u099f\u09bf \u09b8\u09ae\u0995\u09cb\u09a3\u09c0 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u0964<\/p>\n\n\n\n

\u2220LMO=\u2220EFO= 1 \u09b8\u09ae\u0995\u09cb\u09a3\u0964<\/p>\n\n\n\n

\u09b8\u09c1\u09a4\u09b0\u09be\u0982, \u2220MOL+\u2220MLO=1 \u09b8\u09ae\u0995\u09cb\u09a3\u0964<\/p>\n\n\n\n

\u098f\u09ac\u0982 \u2220FEO+\u2220EOF = 1 \u09b8\u09ae\u0995\u09cb\u09a3\u0964<\/p>\n\n\n\n

\u2234\u2220MLO+\u2220MOL=\u2220FEO+\u2220EOF<\/p>\n\n\n\n

\u0995\u09bf\u09a8\u09cd\u09a4\u09c1, \u2220MLO=\u2220FEO [\u09ac\u09bf\u09aa\u09cd\u09b0\u09a4\u09c0\u09aa \u0995\u09cb\u09a3]<\/p>\n\n\n\n

\u2234\u2220MLO=\u2220 FEO (\u09aa\u09cd\u09b0\u09ae\u09be\u09a3\u09bf\u09a4)\u0964<\/p>\n\n\n\n

\u09eb<\/strong>. <\/strong>\u25b3<\/strong>ABC <\/strong>\u098f\u09b0<\/strong> AC<\/strong>\u22a5<\/strong>BC: E,AC <\/strong>\u098f\u09b0<\/strong> <\/strong>\u09ac\u09b0\u09cd\u09a7\u09bf\u09a4\u09be\u0982\u09b6\u09c7\u09b0<\/strong> <\/strong>\u0989\u09aa\u09b0<\/strong> <\/strong>\u09af\u09c7\u0995\u09cb\u09a8\u09cb<\/strong> <\/strong>\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1<\/strong> <\/strong>\u098f\u09ac\u0982<\/strong> ED<\/strong>\u22a5<\/strong>AB. ED <\/strong>\u098f\u09ac\u0982<\/strong> BC <\/strong>\u09aa\u09b0\u09b8\u09cd\u09aa\u09b0\u0995\u09c7<\/strong> O <\/strong>\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u09a4\u09c7<\/strong> <\/strong>\u099b\u09c7\u09a6<\/strong> <\/strong>\u0995\u09b0\u09c7\u0964<\/strong> <\/strong>\u09aa\u09cd\u09b0\u09ae\u09be\u09a8<\/strong> <\/strong>\u0995\u09b0<\/strong> <\/strong>\u09af\u09c7<\/strong>, <\/strong>\u2220<\/strong>CEO=<\/strong>\u2220<\/strong>DBO.<\/strong><\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/p>\n\n\n\n

\u09ac\u09bf\u09b6\u09c7\u09b7<\/strong> <\/strong>\u09a8\u09bf\u09b0\u09cd\u09ac\u09be\u099a\u09a8\u0983<\/strong><\/p>\n\n\n\n

\u09ae\u09a8\u09c7 \u0995\u09b0\u09bf, AC\u22a5BC; E, AC \u098f\u09b0 \u09ac\u09b0\u09cd\u09a7\u09bf\u09a4\u09be\u0982\u09b6\u09c7\u09b0 \u0989\u09aa\u09b0 \u09af\u09c7\u0995\u09cb\u09a8\u09cb \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1 \u098f\u09ac\u0982 ED\u22a5AB.  ED \u098f\u09ac\u0982 BC \u09aa\u09b0\u09b8\u09cd\u09aa\u09b0\u0995\u09c7 O \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u09a4\u09c7 \u099b\u09c7\u09a6 \u0995\u09b0\u09c7\u0964<\/p>\n\n\n\n

\u09aa\u09cd\u09b0\u09ae\u09be\u09a8 \u0995\u09b0\u09a4\u09c7 \u09b9\u09ac\u09c7 \u09af\u09c7, \u2220CEO=\u2220DBO<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u09aa\u09cd\u09b0\u09ae\u09be\u09a3\u0983<\/strong><\/p>\n\n\n\n

AC \u0993 DE \u09b2\u09ae\u09cd\u09ac \u09b9\u0993\u09af\u09bc\u09be\u09af\u09bc<\/p>\n\n\n\n

CEO \u0993 BDO \u09a6\u09c1\u0987\u099f\u09bf \u09b8\u09ae\u0995\u09cb\u09a3\u09c0 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u0964<\/p>\n\n\n\n

\u09b8\u09c1\u09a4\u09b0\u09be\u0982 \u2220CEO+\u2220COE= 1 \u09b8\u09ae\u0995\u09cb\u09a3\u0964<\/p>\n\n\n\n

\u098f\u09ac\u0982, \u2220DBO+\u2220DOB= 1 \u09b8\u09ae\u0995\u09cb\u09a3\u0964<\/p>\n\n\n\n

\u2234\u2220CEO+\u2220COE=\u2220DBO+\u2220DOB<\/p>\n\n\n\n

\u0995\u09bf\u09a8\u09cd\u09a4\u09c1 \u2220COE=\u2220DOB [\u09ac\u09bf\u09aa\u09cd\u09b0\u09a4\u09c0\u09aa \u0995\u09cb\u09a3]<\/p>\n\n\n\n

\u2234\u2220CEO=\u2220DBO (\u09aa\u09cd\u09b0\u09ae\u09be\u09a3\u09bf\u09a4)<\/p>\n\n\n\n

\n\n\n\n
tags: <\/em>Class 7 Math book solution BD pdf,Math lecture guide for class 7,class 7 math bd pdf,\u0997\u09a3\u09bf\u09a4 \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0-\u09ef.\u09e7 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u09ae\u09a7\u09cd\u09af\u09ae\u09be \u0989\u099a\u09cd\u099a\u09a4\u09be \u0995\u09cb\u09a3\u09c7\u09b0 \u09ae\u09be\u09a8\r<\/pre>\n","protected":false},"excerpt":{"rendered":"
\u09ef\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c | \u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 | Class Seven (07) Math Book Solution | Chapter 09 : Triangles | Class 7 math book Online Solution in bangladesh (bd) \u09ef\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ef.\u09e7: \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u09ae\u09a7\u09cd\u09af\u09ae\u09be-\u0989\u099a\u09cd\u099a\u09a4\u09be \u0993 \u0995\u09cb\u09a3\u09c7\u09b0 \u09ae\u09be\u09a8 \u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc \u09ef\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ef.\u09e7 \u098f\u09b0 \u09b8\u0995\u09b2 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8 \u0993 \u0989\u09a4\u09cd\u09a4\u09b0 […]<\/p>\n","protected":false},"author":1,"featured_media":4333,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[33],"tags":[35,34],"class_list":["post-4656","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-class-seven-7","tag-class-7","tag-class-seven"],"yoast_head":"\n\u09ef\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ef.\u09e7 | \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf - Study Zone BD<\/title>\n<meta name=\"description\" content=\"\u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 | Class Seven (07) Math Book Solution. Chapter 09 : Triangles \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0\u09b0 \u09b8\u09ae\u09be\u09a7\u09be\u09a8....\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.studyzonebd.com\/math\/class-7-chapter-09-lesson-9-1\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u09ef\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ef.\u09e7 | \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf - Study Zone BD\" \/>\n<meta property=\"og:description\" content=\"\u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 | Class Seven (07) Math Book Solution. Chapter 09 : Triangles \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0\u09b0 \u09b8\u09ae\u09be\u09a7\u09be\u09a8....\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.studyzonebd.com\/math\/class-7-chapter-09-lesson-9-1\/\" \/>\n<meta property=\"og:site_name\" content=\"Study Zone BD\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/studyzonebdcom\/\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/studyzonebdcom\/\" \/>\n<meta property=\"article:published_time\" content=\"2022-09-26T14:10:37+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-09-26T14:14:13+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/Class-7-math-solution.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"StudyZone BD\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@StudyZoneBD_com\" \/>\n<meta name=\"twitter:site\" content=\"@StudyZoneBD_com\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"StudyZone BD\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/class-7-chapter-09-lesson-9-1\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/class-7-chapter-09-lesson-9-1\\\/\"},\"author\":{\"name\":\"StudyZone BD\",\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/#\\\/schema\\\/person\\\/eb47b9e07c0f27fa4d114357c2eda1e2\"},\"headline\":\"\u09ef\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ef.\u09e7 | \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf\",\"datePublished\":\"2022-09-26T14:10:37+00:00\",\"dateModified\":\"2022-09-26T14:14:13+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/class-7-chapter-09-lesson-9-1\\\/\"},\"wordCount\":378,\"publisher\":{\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/class-7-chapter-09-lesson-9-1\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/wp-content\\\/uploads\\\/2022\\\/09\\\/Class-7-math-solution.jpg\",\"keywords\":[\"class 7\",\"class seven\"],\"articleSection\":[\"Class Seven (7)\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/class-7-chapter-09-lesson-9-1\\\/\",\"url\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/class-7-chapter-09-lesson-9-1\\\/\",\"name\":\"\u09ef\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ef.\u09e7 | \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf - Study Zone BD\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/class-7-chapter-09-lesson-9-1\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/class-7-chapter-09-lesson-9-1\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/wp-content\\\/uploads\\\/2022\\\/09\\\/Class-7-math-solution.jpg\",\"datePublished\":\"2022-09-26T14:10:37+00:00\",\"dateModified\":\"2022-09-26T14:14:13+00:00\",\"description\":\"\u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 | Class Seven (07) Math Book Solution. Chapter 09 : Triangles \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0\u09b0 \u09b8\u09ae\u09be\u09a7\u09be\u09a8....\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/class-7-chapter-09-lesson-9-1\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/class-7-chapter-09-lesson-9-1\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/class-7-chapter-09-lesson-9-1\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/wp-content\\\/uploads\\\/2022\\\/09\\\/Class-7-math-solution.jpg\",\"contentUrl\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/wp-content\\\/uploads\\\/2022\\\/09\\\/Class-7-math-solution.jpg\",\"width\":1200,\"height\":675,\"caption\":\"Class 7 math book Online Solution Bangladesh (BD)\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/class-7-chapter-09-lesson-9-1\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u09ef\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ef.\u09e7 | \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/#website\",\"url\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/\",\"name\":\"Study Zone BD\",\"description\":\"Digital Learning Platform\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/#organization\",\"name\":\"Study Zone BD\",\"url\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/wp-content\\\/uploads\\\/2022\\\/08\\\/cropped-color-logo-with-round-color.png\",\"contentUrl\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/wp-content\\\/uploads\\\/2022\\\/08\\\/cropped-color-logo-with-round-color.png\",\"width\":512,\"height\":512,\"caption\":\"Study Zone BD\"},\"image\":{\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/studyzonebdcom\\\/\",\"https:\\\/\\\/x.com\\\/StudyZoneBD_com\",\"https:\\\/\\\/www.instagram.com\\\/studyzonebd\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/studyzonebd\",\"https:\\\/\\\/www.pinterest.com\\\/studyzonebd\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/#\\\/schema\\\/person\\\/eb47b9e07c0f27fa4d114357c2eda1e2\",\"name\":\"StudyZone BD\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/wp-content\\\/litespeed\\\/avatar\\\/4b5f1b5e307a61c9fe45b7ffa12d62dc.jpg?ver=1780479430\",\"url\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/wp-content\\\/litespeed\\\/avatar\\\/4b5f1b5e307a61c9fe45b7ffa12d62dc.jpg?ver=1780479430\",\"contentUrl\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/wp-content\\\/litespeed\\\/avatar\\\/4b5f1b5e307a61c9fe45b7ffa12d62dc.jpg?ver=1780479430\",\"caption\":\"StudyZone BD\"},\"description\":\"StudyZone BD is the digital learning platform for students and job candidates. We provide the information and arrange the examination for students. We have lot of collection of the book, MCQ, questions, questions, model tests, courses etc.\",\"sameAs\":[\"https:\\\/\\\/www.studyzonebd.com\\\/math\",\"https:\\\/\\\/www.facebook.com\\\/studyzonebdcom\\\/\",\"https:\\\/\\\/www.instagram.com\\\/studyzonebd\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/studyzonebd\",\"https:\\\/\\\/www.pinterest.com\\\/studyzonebd\",\"https:\\\/\\\/x.com\\\/StudyZoneBD_com\",\"https:\\\/\\\/www.youtube.com\\\/channel\\\/UCRiLdrVTQQxxj3NPp1UbPeQ\"],\"url\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/author\\\/study-zone-bd\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"\u09ef\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ef.\u09e7 | \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf - Study Zone BD","description":"\u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 | Class Seven (07) Math Book Solution. Chapter 09 : Triangles \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0\u09b0 \u09b8\u09ae\u09be\u09a7\u09be\u09a8....","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.studyzonebd.com\/math\/class-7-chapter-09-lesson-9-1\/","og_locale":"en_US","og_type":"article","og_title":"\u09ef\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ef.\u09e7 | \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf - Study Zone BD","og_description":"\u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 | Class Seven (07) Math Book Solution. Chapter 09 : Triangles \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0\u09b0 \u09b8\u09ae\u09be\u09a7\u09be\u09a8....","og_url":"https:\/\/www.studyzonebd.com\/math\/class-7-chapter-09-lesson-9-1\/","og_site_name":"Study Zone BD","article_publisher":"https:\/\/www.facebook.com\/studyzonebdcom\/","article_author":"https:\/\/www.facebook.com\/studyzonebdcom\/","article_published_time":"2022-09-26T14:10:37+00:00","article_modified_time":"2022-09-26T14:14:13+00:00","og_image":[{"width":1200,"height":675,"url":"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/Class-7-math-solution.jpg","type":"image\/jpeg"}],"author":"StudyZone BD","twitter_card":"summary_large_image","twitter_creator":"@StudyZoneBD_com","twitter_site":"@StudyZoneBD_com","twitter_misc":{"Written by":"StudyZone BD","Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.studyzonebd.com\/math\/class-7-chapter-09-lesson-9-1\/#article","isPartOf":{"@id":"https:\/\/www.studyzonebd.com\/math\/class-7-chapter-09-lesson-9-1\/"},"author":{"name":"StudyZone BD","@id":"https:\/\/www.studyzonebd.com\/math\/#\/schema\/person\/eb47b9e07c0f27fa4d114357c2eda1e2"},"headline":"\u09ef\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ef.\u09e7 | \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf","datePublished":"2022-09-26T14:10:37+00:00","dateModified":"2022-09-26T14:14:13+00:00","mainEntityOfPage":{"@id":"https:\/\/www.studyzonebd.com\/math\/class-7-chapter-09-lesson-9-1\/"},"wordCount":378,"publisher":{"@id":"https:\/\/www.studyzonebd.com\/math\/#organization"},"image":{"@id":"https:\/\/www.studyzonebd.com\/math\/class-7-chapter-09-lesson-9-1\/#primaryimage"},"thumbnailUrl":"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/Class-7-math-solution.jpg","keywords":["class 7","class seven"],"articleSection":["Class Seven (7)"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.studyzonebd.com\/math\/class-7-chapter-09-lesson-9-1\/","url":"https:\/\/www.studyzonebd.com\/math\/class-7-chapter-09-lesson-9-1\/","name":"\u09ef\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ef.\u09e7 | \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf - Study Zone BD","isPartOf":{"@id":"https:\/\/www.studyzonebd.com\/math\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.studyzonebd.com\/math\/class-7-chapter-09-lesson-9-1\/#primaryimage"},"image":{"@id":"https:\/\/www.studyzonebd.com\/math\/class-7-chapter-09-lesson-9-1\/#primaryimage"},"thumbnailUrl":"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/Class-7-math-solution.jpg","datePublished":"2022-09-26T14:10:37+00:00","dateModified":"2022-09-26T14:14:13+00:00","description":"\u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 | Class Seven (07) Math Book Solution. Chapter 09 : Triangles \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0\u09b0 \u09b8\u09ae\u09be\u09a7\u09be\u09a8....","breadcrumb":{"@id":"https:\/\/www.studyzonebd.com\/math\/class-7-chapter-09-lesson-9-1\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.studyzonebd.com\/math\/class-7-chapter-09-lesson-9-1\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.studyzonebd.com\/math\/class-7-chapter-09-lesson-9-1\/#primaryimage","url":"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/Class-7-math-solution.jpg","contentUrl":"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/Class-7-math-solution.jpg","width":1200,"height":675,"caption":"Class 7 math book Online Solution Bangladesh (BD)"},{"@type":"BreadcrumbList","@id":"https:\/\/www.studyzonebd.com\/math\/class-7-chapter-09-lesson-9-1\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.studyzonebd.com\/math\/"},{"@type":"ListItem","position":2,"name":"\u09ef\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ef.\u09e7 | \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf"}]},{"@type":"WebSite","@id":"https:\/\/www.studyzonebd.com\/math\/#website","url":"https:\/\/www.studyzonebd.com\/math\/","name":"Study Zone BD","description":"Digital Learning Platform","publisher":{"@id":"https:\/\/www.studyzonebd.com\/math\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.studyzonebd.com\/math\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.studyzonebd.com\/math\/#organization","name":"Study Zone BD","url":"https:\/\/www.studyzonebd.com\/math\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.studyzonebd.com\/math\/#\/schema\/logo\/image\/","url":"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/08\/cropped-color-logo-with-round-color.png","contentUrl":"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/08\/cropped-color-logo-with-round-color.png","width":512,"height":512,"caption":"Study Zone BD"},"image":{"@id":"https:\/\/www.studyzonebd.com\/math\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/studyzonebdcom\/","https:\/\/x.com\/StudyZoneBD_com","https:\/\/www.instagram.com\/studyzonebd\/","https:\/\/www.linkedin.com\/company\/studyzonebd","https:\/\/www.pinterest.com\/studyzonebd"]},{"@type":"Person","@id":"https:\/\/www.studyzonebd.com\/math\/#\/schema\/person\/eb47b9e07c0f27fa4d114357c2eda1e2","name":"StudyZone BD","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.studyzonebd.com\/math\/wp-content\/litespeed\/avatar\/4b5f1b5e307a61c9fe45b7ffa12d62dc.jpg?ver=1780479430","url":"https:\/\/www.studyzonebd.com\/math\/wp-content\/litespeed\/avatar\/4b5f1b5e307a61c9fe45b7ffa12d62dc.jpg?ver=1780479430","contentUrl":"https:\/\/www.studyzonebd.com\/math\/wp-content\/litespeed\/avatar\/4b5f1b5e307a61c9fe45b7ffa12d62dc.jpg?ver=1780479430","caption":"StudyZone BD"},"description":"StudyZone BD is the digital learning platform for students and job candidates. We provide the information and arrange the examination for students. We have lot of collection of the book, MCQ, questions, questions, model tests, courses etc.","sameAs":["https:\/\/www.studyzonebd.com\/math","https:\/\/www.facebook.com\/studyzonebdcom\/","https:\/\/www.instagram.com\/studyzonebd\/","https:\/\/www.linkedin.com\/company\/studyzonebd","https:\/\/www.pinterest.com\/studyzonebd","https:\/\/x.com\/StudyZoneBD_com","https:\/\/www.youtube.com\/channel\/UCRiLdrVTQQxxj3NPp1UbPeQ"],"url":"https:\/\/www.studyzonebd.com\/math\/author\/study-zone-bd\/"}]}},"_links":{"self":[{"href":"https:\/\/www.studyzonebd.com\/math\/wp-json\/wp\/v2\/posts\/4656","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.studyzonebd.com\/math\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.studyzonebd.com\/math\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.studyzonebd.com\/math\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.studyzonebd.com\/math\/wp-json\/wp\/v2\/comments?post=4656"}],"version-history":[{"count":0,"href":"https:\/\/www.studyzonebd.com\/math\/wp-json\/wp\/v2\/posts\/4656\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.studyzonebd.com\/math\/wp-json\/wp\/v2\/media\/4333"}],"wp:attachment":[{"href":"https:\/\/www.studyzonebd.com\/math\/wp-json\/wp\/v2\/media?parent=4656"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.studyzonebd.com\/math\/wp-json\/wp\/v2\/categories?post=4656"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.studyzonebd.com\/math\/wp-json\/wp\/v2\/tags?post=4656"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}