Question

Two angles are supplementary. The first angle measures 60°. What's the measurement of the second angle?

Answer 1

Supplementary angles add up to 180. The second is 120, 180-60=120

Answer 2

The measurement of the second angle is
`120\°`

Explanation:

we know that

If two angles are supplementary

then

their sum is equal to
`180\°`

Let

x------> the measure of the second angle

so

`x+60\°=180\°`

Solve for x

`x=180\°-60\°`

`x=120\°`