{"id":4736,"date":"2022-09-26T17:44:30","date_gmt":"2022-09-26T17:44:30","guid":{"rendered":"https:\/\/www.studyzonebd.com\/math\/?p=4736"},"modified":"2022-09-26T18:06:24","modified_gmt":"2022-09-26T18:06:24","slug":"class-7-chapter-10-lesson-10-3","status":"publish","type":"post","link":"https:\/\/www.studyzonebd.com\/math\/class-7-chapter-10-lesson-10-3\/","title":{"rendered":"\u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09b0\u09cd\u09ac\u09b8\u09ae\u09a4\u09be \u0993 \u09b8\u09a6\u09c3\u09b6\u09a4\u09be | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e7\u09e6.\u09e9 | \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf"},"content":{"rendered":"\n

\u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09b0\u09cd\u09ac\u09b8\u09ae\u09a4\u09be \u0993 \u09b8\u09a6\u09c3\u09b6\u09a4\u09be | \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>10 : Equality and Equality | Class 7 math book Online Solution in bangladesh (bd)<\/p>\n\n\n\n

\u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09b0\u09cd\u09ac\u09b8\u09ae\u09a4\u09be \u0993 \u09b8\u09a6\u09c3\u09b6\u09a4\u09be | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e7\u09e6.\u09e9: \u09b8\u09a6\u09c3\u09b6\u09a4\u09be<\/h4>\n\n\n\n

\u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09b0\u09cd\u09ac\u09b8\u09ae\u09a4\u09be \u0993 \u09b8\u09a6\u09c3\u09b6\u09a4\u09be | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e7\u09e6.\u09e9 \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 \u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e7\u09e6.\u09e9 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8 \u0993 \u09b8\u09ae\u09be\u09a7\u09be\u09a8<\/strong><\/span><\/h4>\n\n\n\n

\u09e7. \u099a\u09bf\u09a4\u09cd\u09b0\u099f\u09bf \u09b2\u0995\u09cd\u09b7\u09cd\u09af \u0995\u09b0\u09bf\u0983<\/strong><\/p>\n\n\n\n

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

\u099a\u09bf\u09a4\u09cd\u09b0\u09c7, ABCD \u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u0964 \u2220B=\u0995\u09a4?<\/p>\n\n\n\n

(\u0995) \u2220C          (\u0996) \u2220D
(\u0997) \u2220A-\u2220D    (\u0998) \u2220C-\u2220D
\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0996<\/a><\/p>\n\n\n\n

\u09e8. <\/strong>\u25b3ABC <\/strong>\u098f <\/strong>\u2220B>\u2220C <\/strong>\u09b9\u09b2\u09c7 \u0995\u09cb\u09a8\u099f\u09bf \u09b8\u09a0\u09bf\u0995?<\/strong><\/p>\n\n\n\n

(\u0995) BC>AC      (\u0996) AB>AC
(\u0997) AC>BC       (\u0998) AC>AB
\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0998<\/p>\n\n\n\n

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

(\u0995) \u09e7 \u09b8\u09ae\u0995\u09cb\u09a3    (\u0996) \u09e8 \u09b8\u09ae\u0995\u09cb\u09a3
(\u0997) \u09e9 \u09b8\u09ae\u0995\u09cb\u09a3    (\u0997) \u09ea \u09b8\u09ae\u0995\u09cb\u09a3 
\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0998<\/p>\n\n\n\n

\u09ea. <\/strong>\u25b3ABC <\/strong>\u098f <\/strong>\u2220A=700<\/sup>, \u2220B=200 <\/sup> <\/strong>\u09b9\u09b2\u09c7 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u099f\u09bf \u0995\u09c0 \u09a7\u09b0\u09a8\u09c7\u09b0?<\/strong><\/p>\n\n\n\n

(\u0995) \u09b8\u09ae\u0995\u09cb\u09a3\u09c0     (\u0996) \u09b8\u09ae\u09a6\u09cd\u09ac\u09bf\u09ac\u09be\u09b9\u09c1
(\u0997) \u09b8\u09c2\u0995\u09cd\u09b7\u09cd\u09ae\u0995\u09cb\u09a3\u09c0    (\u0998) \u09b8\u09ae\u09ac\u09be\u09b9\u09c1
\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0995<\/p>\n\n\n\n

\u09eb. \u09a8\u09bf\u099a\u09c7\u09b0 \u09aa\u09cd\u09b0\u09a4\u09bf\u099f\u09bf \u099a\u09bf\u09a4\u09cd\u09b0\u09c7 \u09a6\u09c1\u0987\u099f\u09bf \u09b8\u09a6\u09c3\u09b6\u09a4\u09be\u09b0 \u0995\u09be\u09b0\u09a3 \u09ac\u09b0\u09cd\u09a3\u09a8\u09be \u0995\u09b0\u0983<\/strong><\/p>\n\n\n\n

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

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

(a)<\/strong><\/p>\n\n\n\n

\u25b3ABE \u098f\u09ac\u0982 \u25b3ACD \u098f\u09b0 \u09ae\u09a7\u09cd\u09af\u09c7
\u2220DAC=\u2220EAB [\u09b8\u09be\u09a7\u09be\u09b0\u09a3 \u0995\u09cb\u09a3]
\u2220EBA=\u2220DCA [\u2234BE\u0964\u0964CD]
\u098f\u09ac\u0982 \u2220AEB=\u2220ADC [\u0985\u09ac\u09b6\u09bf\u09b7\u09cd\u099f \u0995\u09cb\u09a3]
\u2234\u0989\u09ad\u09af\u09bc \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u0995\u09cb\u09a3\u0997\u09c1\u09b2\u09cb \u09b8\u09ae\u09be\u09a8\u0964
\u09b8\u09c1\u09a4\u09b0\u09be\u0982, \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09a6\u09cd\u09ac\u09af\u09bc \u09b8\u09a6\u09c3\u09b6\u0964<\/p>\n\n\n\n

(b)<\/strong><\/p>\n\n\n\n

\u25b3QPN \u098f\u09ac\u0982 \u25b3LPM \u098f
\u2220PQN =\u2220PML [\u09a6\u09c7\u0993\u09af\u09bc\u09be \u0986\u099b\u09c7]
\u2220QPN=\u2220LPM
\u2220PNO=\u2220PLM[\u0985\u09ac\u09b6\u09bf\u09b7\u09cd\u099f \u0995\u09cb\u09a3]
\u2234\u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09a6\u09cd\u09ac\u09af\u09bc \u09b8\u09a6\u09c3\u09b6 \u0995\u09be\u09b0\u09a3 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09a6\u09cd\u09ac\u09af\u09bc\u09c7\u09b0 \u0995\u09cb\u09a3\u0997\u09c1\u09b2\u09cb \u09b8\u09ae\u09be\u09a8\u0964<\/p>\n\n\n\n

(c)<\/strong><\/p>\n\n\n\n

\u25b3VZY \u098f\u09ac\u0982 \u25b3YWX-\u098f
\u2220VYZ=\u2220WYZ [\u09ac\u09bf\u09aa\u09cd\u09b0\u09a4\u09c0\u09aa \u0995\u09cb\u09a3]
\u25b3VYZ \u25b3WXY-\u098f
VY:YX=YZ:WY=2:3
\u2234\u09aa\u09cd\u09b0\u09a6\u09a4\u09cd\u09a4 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09a6\u09cd\u09ac\u09af\u09bc\u09c7\u09b0 \u09a6\u09c1\u0987\u099f\u09bf \u0985\u09a8\u09c1\u09b0\u09c2\u09aa \u09ac\u09be\u09b9\u09c1 \u09b8\u09be\u09ae\u09be\u09a8\u09c1\u09aa\u09be\u09a4\u09bf\u0995 \u098f\u09ac\u0982 \u0985\u09a8\u09cd\u09a4\u09b0\u09cd\u09ad\u09c1\u0995\u09cd\u09a4 \u0995\u09cb\u09a3\u09a6\u09cd\u09ac\u09af\u09bc \u09b8\u09ae\u09be\u09a8\u0964 \u09b8\u09c1\u09a4\u09b0\u09be\u0982 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09a6\u09cd\u09ac\u09af\u09bc \u09b8\u09a6\u09c3\u09b6\u0964<\/p>\n\n\n\n

(d)<\/strong><\/p>\n\n\n\n

\u25b3JGI \u098f\u09ac\u0982 \u25b3KGH-\u098f
\u2220JGI=\u2220KGH [\u09b8\u09be\u09a7\u09be\u09b0\u09a3 \u0995\u09cb\u09a3]
\u2220JIG=\u2220KHG [\u0989\u09ad\u09af\u09bc\u0987 \u09b8\u09ae\u0995\u09cb\u09a3]
\u2234\u2220GJI=\u2220KHG [\u0985\u09ac\u09b6\u09bf\u09b7\u09cd\u099f \u0995\u09cb\u09a3]
\u2234\u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09a6\u09cd\u09ac\u09af\u09bc \u09b8\u09a6\u09c3\u09b6, \u0995\u09be\u09b0\u09a3 \u0989\u09ad\u09af\u09bc \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u09b8\u0995\u09b2 \u0995\u09cb\u09a3 \u09b8\u09ae\u09be\u09a8\u0964<\/p>\n\n\n\n

(e)<\/strong><\/p>\n\n\n\n

\u25b3ABC \u098f\u0995\u099f\u09bf \u09b8\u09ae\u0995\u09cb\u09a3\u09c0 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c,
\u09af\u09be\u09b0 \u09ad\u09c2\u09ae\u09bf BC=6
\u0985\u09a4\u09bf\u09ad\u09c1\u099c AC=7+3=10
\u2234\u09aa\u09bf\u09a5\u09be\u0997\u09cb\u09b0\u09be\u09b8\u09c7\u09b0 \u0989\u09aa\u09aa\u09be\u09a6\u09cd\u09af \u0985\u09a8\u09c1\u09b8\u09be\u09b0\u09c7,
AC2<\/sup>=BC2<\/sup>+AB2
<\/sup>\u09ac\u09be,  100<\/sup>=62<\/sup>+AB2
<\/sup>\u09ac\u09be,  AB2<\/sup>=100-26
\u09ac\u09be,  AB2<\/sup>=64
\u09ac\u09be,  AB=8
\u2234 \u09ad\u09c2\u09ae\u09bf\u0983\u0989\u099a\u09cd\u099a\u09a4\u09be\u0983\u0985\u09a4\u09bf\u09ad\u09c1\u099c=6:8:10
\u0986\u09ac\u09be\u09b0, \u25b3ECD \u09b8\u09ae\u0995\u09cb\u09a3\u09c0 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7
\u09ad\u09c2\u09ae\u09bf CE=3 \u098f\u09ac\u0982  DE=5
DE2<\/sup>=CE2<\/sup>+CD2
<\/sup>\u09ac\u09be,  52<\/sup>=32<\/sup>+CD2
<\/sup>\u09ac\u09be,  CD2<\/sup>=25-9
\u09ac\u09be,  CD2<\/sup>=16
\u09ac\u09be,  CD=4
\u098f\u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7, \u09ad\u09c2\u09ae\u09bf\u0983\u0989\u099a\u09cd\u099a\u09a4\u09be\u0983\u0985\u09a4\u09bf\u09ad\u09c1\u099c=3:4:5=6:8:10 [2 \u09a6\u09cd\u09ac\u09be\u09b0\u09be \u0997\u09c1\u09a3 \u0995\u09b0\u09c7]
\u2234\u0989\u09ad\u09af\u09bc \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u09ac\u09be\u09b9\u09c1\u09a4\u09cd\u09b0\u09af\u09bc\u09c7\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 \u09b8\u09ae\u09be\u09a8\u0964
\u2234\u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09a6\u09cd\u09ac\u09af\u09bc \u09b8\u09a6\u09c3\u09b6\u0964<\/p>\n\n\n\n

(f)<\/strong><\/p>\n\n\n\n

\u25b3VYZ \u09b8\u09ae\u0995\u09cb\u09a3\u09c0 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7,
\u0985\u09a4\u09bf\u09ad\u09c1\u099c, VY=26,
ZY=10
VZ=24 (\u09aa\u09bf\u09a5\u09be\u0997\u09cb\u09b0\u09be\u09b8\u09c7\u09b0 \u09b8\u09c2\u09a4\u09cd\u09b0 \u09aa\u09cd\u09b0\u09af\u09bc\u09cb\u0997\u09c7)
\u25b3WXY \u09b8\u09ae\u0995\u09cb\u09a3\u09c0 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7,
\u0985\u09a4\u09bf\u09ad\u09c1\u099c XY=13
YW=5
WX=12 (\u09aa\u09bf\u09a5\u09be\u0997\u09cb\u09b0\u09be\u09b8\u09c7\u09b0 \u09b8\u09c2\u09a4\u09cd\u09b0 \u09aa\u09cd\u09b0\u09af\u09bc\u09cb\u0997\u09c7)
\u2234\u25b3VYZ : \u25b3WXY
5 : 12 : 13=10 : 24 :26 [\u09ac\u09be\u09b9\u09c1\u09a4\u09cd\u09b0\u09af\u09bc\u09c7\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 \u09b8\u09ae\u09be\u09a8]
\u2234\u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09a6\u09cd\u09ac\u09af\u09bc \u09b8\u09a6\u09c3\u09b6\u0964<\/p>\n\n\n\n

\u09ec. \u09aa\u09cd\u09b0\u09ae\u09be\u09a3 \u0995\u09b0 \u09af\u09c7, \u09a8\u09bf\u099a\u09c7\u09b0 \u09aa\u09cd\u09b0\u09a4\u09bf\u099f\u09bf \u099a\u09bf\u09a4\u09cd\u09b0\u09c7\u09b0 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c \u09a6\u09c1\u0987\u099f\u09bf \u09b8\u09a6\u09c3\u09b6\u0964<\/strong><\/p>\n\n\n\n

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

(a)<\/strong><\/p>\n\n\n\n

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

\u09af\u09c7\u09b9\u09c7\u09a4\u09c1, AB \u0964\u0964 DE \u098f\u09ac\u0982 AE \u09a4\u09be\u09a6\u09c7\u09b0 \u099b\u09c7\u09a6\u0995
\u2220BAE=\u2220DEA  [\u098f\u0995\u09be\u09a8\u09cd\u09a4\u09b0 \u0995\u09cb\u09a3]
\u0986\u09ac\u09be\u09b0, AB \u0964\u0964 DE \u098f\u09ac\u0982 BD \u099b\u09c7\u09a6\u0995
\u2220ABD=\u2220EDB [\u098f\u0995\u09be\u09a8\u09cd\u09a4\u09b0 \u0995\u09cb\u09a3]
\u098f\u09ac\u0982 \u2220BCA=\u2220ECD [\u09ac\u09bf\u09aa\u09cd\u09b0\u09a4\u09c0\u09aa \u0995\u09cb\u09a3]
\u2234\u25b3ABC \u098f\u09ac\u0982\u25b3CDE \u098f\u09b0 \u09b8\u0995\u09b2 \u0995\u09cb\u09a3 \u09aa\u09b0\u09b8\u09cd\u09aa\u09b0 \u09b8\u09ae\u09be\u09a8\u0964
\u09b8\u09c1\u09a4\u09b0\u09be\u0982 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09a6\u09cd\u09ac\u09af\u09bc \u09b8\u09a6\u09c3\u09b6 (\u09aa\u09cd\u09b0\u09ae\u09be\u09a3\u09bf\u09a4)<\/p>\n\n\n\n

(b)<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983
\u25b3WTX \u098f\u09ac\u0982 \u25b3PPTL-\u098f
\u2220TWX=\u2220TPL=900
<\/sup>\u2220WTX=\u2220PTL [\u09b8\u09be\u09a7\u09be\u09b0\u09a3 \u0995\u09cb\u09a3]
\u2234\u2220TXW=\u2220TLP [\u0985\u09ac\u09b6\u09bf\u09b7\u09cd\u099f \u0995\u09cb\u09a3]
\u2234\u0989\u09ad\u09af\u09bc \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u09b8\u0995\u09b2 \u0995\u09cb\u09a3 \u09aa\u09b0\u09b8\u09cd\u09aa\u09b0 \u09b8\u09ae\u09be\u09a8\u0964
\u09b8\u09c1\u09a4\u09b0\u09be\u0982 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09a6\u09cd\u09ac\u09af\u09bc \u09b8\u09a6\u09c3\u09b6 (\u09aa\u09cd\u09b0\u09ae\u09be\u09a3\u09bf\u09a4)<\/p>\n\n\n\n

\u09ed. \u09a6\u09c7\u0996\u09be\u0993 \u09af\u09c7, <\/strong>\u25b3PTN <\/strong>\u098f\u09ac\u0982 <\/strong>\u25b3RWT <\/strong>\u09b8\u09a6\u09c3\u09b6\u0964<\/strong><\/p>\n\n\n\n

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

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

\u25b3PTN \u098f\u09b0 \u09ac\u09be\u09b9\u09c1\u0997\u09c1\u09b2\u09cb\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4=PN : PT : NT = 3 : 4 : 5
\u25b3TWR \u098f\u09b0 \u09ac\u09be\u09b9\u09c1\u0997\u09c1\u09b2\u09cb\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4= TR : WR : WT =9 : 12 : (10+5)=9 : 12 : 15 =3 : 4 : 5
\u2234\u0989\u09ad\u09af\u09bc \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u09ac\u09be\u09b9\u09c1\u0997\u09c2\u09b2\u09cb\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 \u09b8\u09ae\u09be\u09a8\u0964
\u09b8\u09c1\u09a4\u09b0\u09be\u0982 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09a6\u09cd\u09ac\u09af\u09bc \u09b8\u09a6\u09c3\u09b6 (\u09aa\u09cd\u09b0\u09ae\u09be\u09a3\u09bf\u09a4)<\/p>\n\n\n\n

\u09ee. DY \u09b0\u09c7\u0996\u09be\u0982\u09b6 <\/strong>\u2220CWD <\/strong>\u0995\u09cb\u09a3\u099f\u09bf\u09b0 \u09a6\u09cd\u09ac\u09bf\u0996\u09a8\u09cd\u09a1\u0995\u0964 \u09a6\u09c7\u0996\u09be\u0993 \u09af\u09c7, <\/strong>\u25b3CDY <\/strong>\u0993 <\/strong>\u25b3YDW <\/strong>\u09b8\u09a6\u09c3\u09b6\u0964<\/strong><\/p>\n\n\n\n

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

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

\u25b3CDY-\u098f \u2220CDY \u09b8\u0982\u09b2\u0997\u09cd\u09a8 \u09ac\u09be\u09b9\u09c1\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4=CD : DY = 6.75 : 9 = 2.25 : 3
\u0986\u09ac\u09be\u09b0, \u25b3YDW-\u098f \u2220YDW \u09b8\u0982\u09b2\u0997\u09cd\u09a8 \u09ac\u09be\u09b9\u09c1\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4= YD : DW = 9 : 12 = 2.25 : 3
\u2234\u0989\u09ad\u09af\u09bc \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u09b8\u0995\u09b2 \u09ac\u09be\u09b9\u09c1\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 \u09b8\u09ae\u09be\u09a8 \u09b9\u09ac\u09c7\u0964
\u2234\u25b3CDY \u0993 \u25b3YDW \u09b8\u09a6\u09c3\u09b6(\u09aa\u09cd\u09b0\u09ae\u09be\u09a3\u09bf\u09a4)<\/p>\n\n\n\n

\u09ef. \u09a8\u09bf\u099a\u09c7\u09b0 \u09aa\u09cd\u09b0\u09a4\u09bf\u099f\u09bf \u09b8\u09a6\u09c3\u09b6 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c \u099c\u09cb\u09a1\u09bc\u09be \u09a5\u09c7\u0995\u09c7 y \u098f\u09b0 \u09ae\u09be\u09a8 \u09ac\u09c7\u09b0 \u0995\u09b0\u0964<\/strong><\/p>\n\n\n\n

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

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

\u09e7\u09ae \u099c\u09cb\u09a1\u09bc\u09be \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7\u0983
\u09af\u09c7\u09b9\u09c7\u09a4\u09c1 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c \u099c\u09cb\u09a1\u09bc\u09be \u09b8\u09a6\u09c3\u09b6,
6 : 8 : y = 12 : 16 : 20
6 : 8 : y = 6 : 8 : 10
\u2234y=10<\/p>\n\n\n\n

\u09e8\u09af\u09bc \u099c\u09cb\u09a1\u09bc\u09be \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7\u0983<\/p>\n\n\n\n

\u09af\u09c7\u09b9\u09c7\u09a4\u09c1 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09a6\u09cd\u09ac \u09b8\u09a6\u09c3\u09b6 \u09b8\u09c7\u09b9\u09c7\u09a4\u09c1 \u098f\u09a6\u09c7\u09b0 \u09ac\u09be\u09b9\u09c1\u0997\u09c1\u09b2\u09cb\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 \u09b8\u09ae\u09be\u09a8\u0964
\u09b8\u09c1\u09a4\u09b0\u09be\u0982, 7.5 : y = 6 : 10
\u09ac\u09be, 7.5\/y=6\/10
\u09ac\u09be, 6y=10\u27157.5
\u09ac\u09be, y=75\/6
\u09ac\u09be, y=12.5<\/p>\n\n\n\n

\u09e7\u09e6. \u09aa\u09cd\u09b0\u09ae\u09be\u09a8 \u0995\u09b0 \u09af\u09c7, \u099a\u09bf\u09a4\u09cd\u09b0\u09c7\u09b0 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c \u09a4\u09bf\u09a8\u099f\u09bf \u09b8\u09a6\u09c3\u09b6\u0964<\/strong><\/p>\n\n\n\n

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

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

\u25b3GDE-\u098f \u2220GED=900
<\/sup>\u2234\u25b3GFE-\u098f \u2220GEF=900
<\/sup>\u09a7\u09b0\u09bf, EF=x
\u09b8\u09c1\u09a4\u09b0\u09be\u0982, DE=5-x [DF=5]
\u25b3GDF \u09b8\u09ae\u0995\u09cb\u09a3\u09c0 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u09aa\u09bf\u09a5\u09be\u0997\u09cb\u09b0\u09be\u09b8\u09c7\u09b0 \u09b8\u09c2\u09a4\u09cd\u09b0\u09be\u09a8\u09c1\u09b8\u09be\u09b0\u09c7 \u09aa\u09be\u0987,
GE2<\/sup>+DE2<\/sup>=GD2
<\/sup>GE2<\/sup>=GD2<\/sup>-DE2<\/sup>=32<\/sup>-(5-x)2<\/sup>=9-(5-x)2<\/sup>———-(1)
\u25b3GEF \u09b8\u09ae\u0995\u09cb\u09a3\u09c0 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u09aa\u09bf\u09a5\u09be\u0997\u09cb\u09b0\u09be\u09b8\u09c7\u09b0 \u09b8\u09c2\u09a4\u09cd\u09b0\u09be\u09a8\u09c1\u09b8\u09be\u09b0\u09c7 \u09aa\u09be\u0987,
GE2<\/sup>+EF2<\/sup>=GF2
<\/sup>GE2<\/sup>=GF2<\/sup>-EF2<\/sup>=42<\/sup>-x2<\/sup>=16-x2<\/sup>—————(2)
\u22349-(5-x)2<\/sup>=16-x2
<\/sup>\u09ac\u09be, x2<\/sup>-(5-x)2<\/sup>=16-9
\u09ac\u09be, (x-5+x)(x+5-x)=7
\u09ac\u09be, 5(2x-5)=7
\u09ac\u09be, 10x-25=7
\u09ac\u09be, 10x=7+25
\u09ac\u09be, x=32\/10
\u09ac\u09be, x=3.2
\u2234EF=3.2
DE=5-3.2=1.8
\u0986\u09ac\u09be\u09b0, GE2<\/sup>=16-x2 <\/sup> [\u09b8\u09ae\u09c0\u0995\u09b0\u09a3 \u09b9\u09a4\u09c7]
=16-(3.2)2<\/sup>=16-10.24=5.76
\u2234GE=2.4
\u25b3GDE \u098f\u09b0 \u09ac\u09be\u09b9\u09c1\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4=1.8 : 2.4 : 3=0.6 : 0.8 : 1 [3 \u09a6\u09cd\u09ac\u09b0\u09be \u09ad\u09be\u0997 \u0995\u09b0\u09c7]
\u25b3GEF \u098f\u09b0 \u09ac\u09be\u09b9\u09c1\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4=2.4 : 3.2 : 4 = 0.6 : 0.8 : 1 [4 \u09a6\u09cd\u09ac\u09b0\u09be \u09ad\u09be\u0997 \u0995\u09b0\u09c7]
\u25b3GDE \u098f\u09b0 \u09ac\u09be\u09b9\u09c1\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4= 3 : 4 : 5 = 0.6 : 0.8 : 1 [5 \u09a6\u09cd\u09ac\u09b0\u09be \u09ad\u09be\u0997 \u0995\u09b0\u09c7]
\u09af\u09c7\u09b9\u09c7\u09a4\u09c1 \u09b8\u0995\u09b2 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u09ac\u09be\u09b9\u09c1\u0997\u09c1\u09b2\u09cb\u09b0 \u0986\u09a8\u09c1\u09aa\u09be\u09a4 \u09b8\u09ae\u09be\u09a8 \u09b8\u09c7\u09b9\u09c7\u09a4\u09c1 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u0997\u09c1\u09b2\u09cb \u09b8\u09a6\u09c3\u09b6 (\u09aa\u09cd\u09b0\u09ae\u09be\u09a3\u09bf\u09a4)<\/p>\n\n\n\n

\u09e7\u09e7. \u099a\u09a4\u09c1\u09b0\u09cd\u09ad\u09c1\u099c \u09a6\u09c1\u0987\u099f\u09bf\u09b0 \u0985\u09a8\u09c1\u09b0\u09c2\u09aa \u0995\u09cb\u09a3 \u0993 \u0985\u09a8\u09c1\u09b0\u09c2\u09aa \u09ac\u09be\u09b9\u09c1\u0997\u09c1\u09b2\u09cb \u099a\u09bf\u09b9\u09cd\u09a8\u09bf\u09a4 \u0995\u09b0\u0964 \u099a\u09a4\u09c1\u09b0\u09cd\u09ad\u09c1\u099c \u09a6\u09c1\u0987\u099f\u09bf \u09b8\u09a6\u09c3\u09b6 \u0995\u09bf-\u09a8\u09be \u09af\u09be\u099a\u09be\u0987 \u0995\u09b0\u0964<\/strong><\/p>\n\n\n\n

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

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

\u09e7\u09ae \u099a\u09bf\u09a4\u09cd\u09b0\u09c7, \u2220A=700<\/sup> \u098f\u09ac\u0982 \u09e8\u09af\u09bc \u099a\u09bf\u09a4\u09cd\u09b0\u09c7, \u2220B=700
<\/sup>\u09e7\u09ae \u099a\u09bf\u09a4\u09cd\u09b0\u09c7, \u2220X=1100<\/sup> \u098f\u09ac\u0982 \u09e8\u09af\u09bc \u099a\u09bf\u09a4\u09cd\u09b0\u09c7, \u2220K=1100
<\/sup>\u09e7\u09ae \u099a\u09bf\u09a4\u09cd\u09b0\u09c7, \u2220T=1100<\/sup> \u098f\u09ac\u0982 \u09e8\u09af\u09bc \u099a\u09bf\u09a4\u09cd\u09b0\u09c7, \u2220G=1100
<\/sup>\u09e7\u09ae \u099a\u09bf\u09a4\u09cd\u09b0\u09c7, \u2220P=700  <\/sup>\u098f\u09ac\u0982 \u09e8\u09af\u09bc \u099a\u09bf\u09a4\u09cd\u09b0\u09c7, \u2220F=700
<\/sup>\u2220A \u098f\u09b0 \u0985\u09a8\u09c1\u09b0\u09c1\u09aa \u2220B, \u2220X \u098f\u09b0 \u0985\u09a8\u09c1\u09b0\u09c1\u09aa \u2220K,
\u2220T \u098f\u09b0 \u0985\u09a8\u09c1\u09b0\u09c2\u09aa \u2220G \u098f\u09ac\u0982 \u2220X \u098f\u09b0 \u0985\u09a8\u09c1\u09b0\u09c2\u09aa \u2220K
\u0986\u09ac\u09be\u09b0, AX \u09ac\u09be\u09b9\u09c1=2 \u09b8\u09c7\u09ae\u09bf \u098f\u09ac\u0982 BK \u09ac\u09be\u09b9\u09c1 =1 \u09b8\u09c7\u09ae\u09bf
XT \u09ac\u09be\u09b9\u09c1=1.8 \u09b8\u09c7\u09ae\u09bf \u098f\u09ac\u0982 KG \u09ac\u09be\u09b9\u09c1 =0.9 \u09b8\u09c7\u09ae\u09bf
TP \u09ac\u09be\u09b9\u09c1=1.6 \u09b8\u09c7\u09ae\u09bf \u098f\u09ac\u0982 GF \u09ac\u09be\u09b9\u09c1 =0.8 \u09b8\u09c7\u09ae\u09bf
PA \u09ac\u09be\u09b9\u09c1=2.8 \u09b8\u09c7\u09ae\u09bf \u098f\u09ac\u0982 FB \u09ac\u09be\u09b9\u09c1 =1.4 \u09b8\u09c7\u09ae\u09bf
\u09a6\u09c7\u0996\u09be \u09af\u09be\u099a\u09cd\u099b\u09c7,\u0985\u09a8\u09c1\u09b0\u09c2\u09aa \u09ac\u09be\u09b9\u09c1\u0997\u09c1\u09b2\u09cb \u09b8\u09ae\u09be\u09a8\u09c1\u09aa\u09be\u09a4\u09bf\u0995\u0964
AX=BK, XT=KG, TP=GF \u098f\u09ac\u0982 PA=FB
 \u09b8\u09c1\u09a4\u09b0\u09be\u0982 \u099a\u09a4\u09c1\u09b0\u09cd\u09ad\u09c1\u099c \u09a6\u09c1\u0987\u099f\u09bf \u09b8\u09a6\u09c3\u09b6\u0964<\/p>\n\n\n\n

\u09e7\u09e8. 1 \u09ae\u09bf\u099f\u09be\u09b0 \u09a6\u09c8\u09b0\u09cd\u09a7\u09cd\u09af\u09c7\u09b0 \u098f\u0995\u099f\u09bf \u09b2\u09be\u09a0\u09bf \u09ae\u09be\u099f\u09bf\u09a4\u09c7 \u09a6\u09a8\u09cd\u09a1\u09be\u09af\u09bc\u09ae\u09be\u09a8 \u0985\u09ac\u09b8\u09cd\u09a5\u09be\u09af\u09bc 0.4 \u09ae\u09bf\u099f\u09be\u09b0 \u099b\u09be\u09af\u09bc\u09be \u09ab\u09c7\u09b2\u09c7\u0964 \u098f\u0995\u0987 \u09b8\u09ae\u09af\u09bc\u09c7 \u098f\u0995\u099f\u09bf \u0996\u09be\u09a1\u09bc\u09be \u0997\u09be\u099b\u09c7\u09b0 \u099b\u09be\u09af\u09bc\u09be\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af 7 \u09ae\u09bf\u099f\u09be\u09b0 \u09b9\u09b2\u09c7 \u0997\u09be\u099b\u099f\u09bf\u09b0 \u0989\u099a\u09cd\u099a\u09a4\u09be \u0995\u09a4?<\/strong><\/p>\n\n\n\n

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

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

\u099a\u09bf\u09a4\u09cd\u09b0\u09c7, \u0997\u09be\u099b\u099f\u09bf\u09b0 \u0989\u099a\u09cd\u099a\u09a4\u09be h \u09ae\u09bf\u099f\u09be\u09b0\u0964
\u09b2\u09be\u09a0\u09bf\u09b0 \u09aa\u09cd\u09b0\u09be\u09a8\u09cd\u09a4\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1 \u0993 \u099b\u09be\u09af\u09bc\u09be\u09b0 \u09aa\u09cd\u09b0\u09be\u09a8\u09cd\u09a4\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1 \u09af\u09cb\u0997 \u0995\u09b0\u09bf\u0964 \u0997\u09be\u099b\u09c7\u09b0 \u09aa\u09cd\u09b0\u09be\u09a8\u09cd\u09a4 \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1 \u0993 \u098f\u09b0 \u099b\u09be\u09af\u09bc\u09be\u09b0 \u09aa\u09cd\u09b0\u09be\u09a8\u09cd\u09a4\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1 \u09af\u09cb\u0997 \u0995\u09b0\u09bf\u0964
\u09ae\u09a8\u09c7 \u0995\u09b0\u09bf, \u25b3ABC \u0993 \u25b3DEF \u09a6\u09c1\u0987\u099f\u09bf \u09b8\u09a6\u09c3\u09b6 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c \u0989\u09ce\u09aa\u09a8\u09cd\u09a8 \u09b9\u09b2\u09cb\u0964
\u0995\u09be\u09b0\u09a8, \u2220ABC=\u2220DEF; \u2220BAC=\u2220EDF
\u09a4\u09be\u09b9\u09b2\u09c7,
DE\/AB=BC\/EF
\u09ac\u09be, h\/7=1\/4
\u09ac\u09be, h=17.5
\u2234\u0997\u09be\u099b\u099f\u09bf\u09b0 \u0989\u099a\u09cd\u099a\u09a4\u09be=17.5 \u09ae\u09bf\u099f\u09be\u09b0\u0964<\/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-\u09e7\u09e6.\u09e9 \u09b8\u09a6\u09c3\u09b6\u09a4\u09be<\/pre>\n","protected":false},"excerpt":{"rendered":"
\u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09b0\u09cd\u09ac\u09b8\u09ae\u09a4\u09be \u0993 \u09b8\u09a6\u09c3\u09b6\u09a4\u09be | \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 10 : Equality and Equality | Class 7 math book Online Solution in bangladesh (bd) \u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09b0\u09cd\u09ac\u09b8\u09ae\u09a4\u09be \u0993 \u09b8\u09a6\u09c3\u09b6\u09a4\u09be | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e7\u09e6.\u09e9: \u09b8\u09a6\u09c3\u09b6\u09a4\u09be \u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09b0\u09cd\u09ac\u09b8\u09ae\u09a4\u09be \u0993 \u09b8\u09a6\u09c3\u09b6\u09a4\u09be | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e7\u09e6.\u09e9 \u098f\u09b0 \u09b8\u0995\u09b2 […]<\/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-4736","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-class-seven-7","tag-class-7","tag-class-seven"],"yoast_head":"\n\u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09b0\u09cd\u09ac\u09b8\u09ae\u09a4\u09be \u0993 \u09b8\u09a6\u09c3\u09b6\u09a4\u09be | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e7\u09e6.\u09e9 | \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. 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