Question

in a quadrilateral ABCD, angle A equal to 150 degree and Angle b is equal to angle c is equal to angle -d find Angle B and angle C and Angle D

Answer 1

A = 150°
B = C = -D
i.e., D = 360 - B. ....(reflex angle)

Hence,
A = D = 150°
B = C = 210°