Question

ABCD is a trapezium where ab parallel to CD measure of angle a a equals to angle b equal to 45 degree .prove that AD equal to BC

Answer 1

Answer:

one of the best way to prove it is two prove congurent the two triangle formed outside the trapezium. it will have AAS congurency. so BC = AD.

Do it and if have any doubt ask me in comment.

Answer 2

Answer:

let ATQ

AB parallel to CD and A=B=45°

so first to make sure we have to draw diagonals

AC and BD so D equal to 45° because of diagonal of B.

so equels to 45 degree because of diagonals of A

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