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In figure, ABCD is a square and EF is parallel to diagonal BD and EM = FM. Then identify the correct relation for DF.

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DE =AB

DF = BE

AF = BE

AE = DE

answer is A.

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Detailed Solution

Triangles Class 9 Extra Questions Maths Chapter 7 with Solutions Answers 15

EF || BD = ∠1 = ∠2 and ∠3 = ∠4 [corresponding ∠s]
Also, ∠2 = ∠4
⇒ ∠1 = ∠3
⇒ CE = CF (sides opp. to equals ∠s of a ∆]
∴ DF = BE [∵ BC – CE = CD – CF)

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