Question

What is the measure of angle a? what is the measure of angle b?

Answer 1

since it is a parallelogram, hence opposite angles will be equal to each other, hence ,

(5y - 3) = (3y + 27)

5y - 3y = 3 + 27

2y = 30

y = 15

measure of Angle A = 5y - 3 = (5 * 15) - 3 = 75 - 3 = 72 degree

measure of Angle B = 180 degree - 72 degree= 108 degree ( adjacent angle in parallelogram sum to 180 degree )