Question

The measure of the supplement of an angle is twice the measure of the angle. What is the measure of each angle?​

Answer 1

120° and 60°

Explanation:

Suplementary angles sum 180°

then:

a + b = 180°

b = 2a

then:

a + 2a = 180°

3a = 180°

a = 180/3

a = 60°

b = 2a

b = 2*60

b = 120°

Check:

120° + 60° = 180°