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Other Angle Pairs
Complementary angles are two angles whose measures add up to 90°. They could either be adjacent or non-adjacent.
Each angle is the complement of the other angle.
If the question is what is the complement of 40° the answer would be
.
Complements sum to 90°
40° + x = 90°
40° - 40° + x = 90° - 40°
x = 50°
Supplementary Angles
Supplementary Angles are two angles whose measures add up to 180°. They could either be adjacent or non-adjacent.
Each angle is the supplement of the other angle.
If the question is what is the supplement of 40° the answer would be
.
Go to Explore: Complements and Supplements to try identifying complementary and supplementary angles.
