Question

Polygon Interior Angle
Find the measure of the missing angle(s)

Answer 1

x=40°

Explanation:

2x+20°+2x=180°

4x+20=180°

4x=160°

x=40°

Answer 2

2x=80°

2x+20=100°

Explanation:

2x+20+2x=180

4x+20=180

-20 -20

4x=160

4x/4=160/4

x=40

2x=80

2x+20=100

hopefully this helps :)