Question

What makes a Supplementary angle supplementary​

Answer 1

Two angles are called supplementary when their measures add up to 180 degrees.

Explanation:

Answer 2

Two angles are supplementary when their measures add up to 180 degrees.

So what makes a supplementary angle supplementary​?

-> A supplementary angle is supplementary when it is 180° minus the measure of another angle.

In an example, the supplementary angle of 94° is 86° because 180° - 94° = 86°