Question

Find the measure of angle "a" if the other is angle"2a" and their sum is 180⁰.​

Answer 1

Answer:

value of a is 60°

Step-by-step explanation:

because they are in sum so the equation formed will be a+2a=180

Answer 2

Answer:

If the sum of the measures of two angles is 180° they are known as supplementary ... Then, the measure of the other angle a + 40°

Step-by-step explanation:

Two angles are supplementary. If the measure of the angle is twice the measure of the other, find the measure of each angle.

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°

Simplify.

3a=180°

To isolate a , divide both sides of the equation by 3 .

3a3=180°3    a=60°

The measure of the second angle is,

2a=2×60°       =120°

So, the measures of the two supplementary angles are 60° and 120° .