Question

An angle measures 78° less than the measure of its supplementary angle. What is the

measure of each angle?

Answer 1

Explanation:

Supplementary angles add up to 180°.

If the angle is x, its supplement is 180°-x.

x = (180°-x) - 78°

x = 51°

supplement = 180°-x = 129°

The angles are 51° and 129°