Question

If two angles are supplementary and congruent, what is the measure of each angle?

45°
100°
90°
180°

Answer 1

90

Explanation:

Answer 2

supplementary means x+y=180
congruent means they have the same measure x=y

so x+y=x+x=y+y=180=2x=2y
2x=2y=180d
divide by 2
x=y=90


the answers are 90 and 90