Math, asked by singghaditya0, 4 days ago

give me answer of this question

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Answered by yadavaakriti116

1

Answer:

AB=DC (opposite sides of a parallelogram)

∆ABC congruent to ∆DCB

angle ABC=angle DCB

angle ABC+angle DCB= 180°

angle ABC+angle ABC=180°

Angle ABC= 90°

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