Question

What is a requirement of supplementary angles? Supplementary angles must be adjacent. Supplementary angles must be nonadjacent. The measures of supplementary angles must add up to 90°. The measures of supplementary angles must add up to 180°.

Answer 1

Answer:

the measure of supplementary angles must add up to 180

Step-by-step explanation:

complementary angles add up to 90°

angles on a straight line are supplementary angles which add up to 180°