Question

How to find supplementary angles

Answer 1

Let the measure of one of the supplementary angles be a .

Measure of the other angle is 2 times a

Explanation:

Answer 2

Let the measure of one of the supplementary angles be a
.
Measure of the other angle is 2 times a
.
So, measure of the other angle is 2a .

If the sum of the measures of two angles is 180° , then the angles are supplementary.

So, a+2a=180°
3a=180°
To isolate a , divide both sides of the equation by 3 .