Question

What can you say about the sum of the measures of two angles whose sum is 90°? 180°?

Answer 1

Answer:

the sum of the measures of two angles whose sum is 90° are known as complementary angles

eg 60° and 30°, 45° and 45°

forms a right angle, perpendicular to a line

the sum of the measures of two angles whose sum is 180° are known as supplementary angles

eg 130° and 50°, 90° and 90°

forms a line

hope this helps