DeltaABC is an isosceles triangle with A...

`DeltaABC` is an isosceles triangle with `AB=AC`, side BA is produced to D such that AB=AD. Prove that `angleBCD` is a right angle.

A

`(pi)/(6)`

B

`(pi)/(3)`

C

`(2pi)/(3)`

D

`(pi)/(2)`

Verified by Experts

The correct Answer is:

D

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