Question

find the measure of angle b and angle C if ad is parallel to bc in the following figure

Answer 1

Answer:

Angle b=90 and angel c=60

Answer 2

Answer:

In quadrilateral ABCD

Angle c + angle d =180 (co interior angles)

120 + angle c = 180

Angle c = 180-120

Angle c = 60

Angle a + angle b = 180 (co interior angle)

90 + angle b =180

Angle b = 180-90

Angle b = 90