Question

A figure displays two complementary angles. If one of the angles has a measure of 78°, what is the other angle measure?(1 point)
Responses

39°
39°

12°
12°

102°
102°

168°
168°

Answer 1

Complementary angles are two angles whose measures add up to 90°. If one of the angles measures 78°, you can find the other angle by subtracting 78° from 90°:

\( 90° - 78° = 12° \)

So, the measure of the other angle is **12°**.