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

Answer:

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

Step-by-step 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

$x=180\°-60\°$

$x=120\°$