Question

ABCD is a cyclic quadrilateral in which AB is parallel to CD. If angle B is 75° then find other angles and mention the reason.. pls help me

Answer 1

Answer:

Step-by-step explanation:

angle B + angle D =  180 {opposite angle of cyclic quadrilateral}

angle D = 75 degree

again  angle B + angle C = 180  [co interior angle]

angle C = 105 degree

again     angle C + angle A = 180 {opposite angle of cyclic quadrilateral}

angle A = 105 degree