Question

What is the measurement of an angle that is supplementary to an angle that measures 72°?

180°

18°

90°

108°

Answer 1

Two supplementary angles have a sum of 180. To find the supplementary angle of 72, we first subtract 72 from 180. This finds our supplementary angle.
180-72=108

Answer 2

It's 108°
A supplementary angle equals 180°
If one angle is 72°, the other would be 108°