Question

in cyclic quadrilateral ABCD ,m angle A = 80, then find m angle C ...

Answer 1

Hi friend

A = C (vertical opposite sides are equal)

So,angle C is 80°

Answer 2

Given: ∠A = 80°

As we know in a cyclic quadrilateral sum of opposite angle is 180°

So,

∠A + ∠C = 180°

80° + ∠c = 180°  

∠c = 180°- 80°

∠c = 100°