Question

In the given figure , ABCD is a cyclic quadrilateral with ∠BAD =100°, ∠ADC = 85° ,∠ABC=x° and ∠BCD=y°. Find x and y.

Answer 1

it is known that in a cyclic quadrilateral the sum of opposite angle equals to 180 degree

Answer 2

angle BCD=80° answer is right