Q. 34.3( 29 Votes )

# In the adjacent f

Answer :

Given :- ABCD is a parallelogram

And CE=EB

Formula used:- ASA congruency property

If 2 angles and one side between them in two

triangles are equal then both triangle are congruent

Solutions :-

In Δ DCE and Δ FBE

DEC= BEF [Vertically opposite angles]

As DC || BF

ECD= EBF [Alternate angles]

And;

CE=EB [Given]

Δ DCE Δ FBE

As Δ DCE Δ FBE

Then

DC=BF

And DC=AB [opposite sides of parallelogram are equal]

Hence ;

AB=BF

AF=AB+BF

AF=2AB.

Hence Proved;

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