Question

In a Quadrilateral ABCD, AB is parallel to DC. If Angle A : Angle D = 2:3 and Angle B ; Angle C = 7:8, find the measure of each angle.

Answer 1

angle A is 18 degree, angle B is 63 degree, angle C is 72 degree and angle D is 27 degree because 2x+3x+7x+8x=180 degree
20x=180 degree
x=9 degree