Question

Hii
Please answer both parts
Please

Answer 1

As <CAP is exterior angle of ABC

AS exterior angle is equal to sum of 2 opp interior angle


<CAP = <ABC + <ACB

AS ABC is isosceles

So <CAP = <ACB + <ACB

<CAP = 2ACB

AS CAD = DAP

AND CAP = CAD + DAP

SO CAP = 2DAC

SO 2 DAC = 2ACB

DAC = ACB


2) NOW AS DAC = ACB

SO IT MEANS AD//BC ( ALTERNATE)

AND CD//AB

SO ABCD IS PARALLELOGRAM