If ABC is a quadrilateral in which AB ||CD and AD =BC, prove that <A=<B.
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see the attached figure ,
given ,
AB = CD
AD = BC
to prove that : ABCD is a IIgram
proof :- AB = CD (from the given )
BC = AD (from the given )
BD = BD (common side )
∴ Δ ADB ≡ Δ DBC by SSS congruence rule .
therefore from CPCT we can write that ∠ADB = ∠ DBC (alternate interior angle )
since the alternate interior angles and opposite sides are equal in a quadrilateral therefore it is a IIgram .
i hope it helps ...........................^_^
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shakku52:
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The following are weekly wages of 30 workers Tabulate the data by grouping them in equal class interval, ane of them beigns 90-100 (100 not include) 96, 162, 108, 168, 138, 94, 128, 70, 88, 154, 134, 154, 88, 150, 86, 126, 150, 76, 62, 168, 158, 108, 102, 160, 76, 124, 150, 74, 94, 142.
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hey mate, I am parth dhami
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