# Complementary

Complementary angles are two angles that when measured, add up to 90°. In the example below, the two angles shown have measures of 30° and 60°. Because they add up to 90°, these angles are considered complementary:

Complementary angles are two angles that when measured, add up to 90°. In the example below, the two angles shown have measures of 30° and 60°. Because they add up to 90°, these angles are considered complementary: