This calculator determines the complementary and supplementary angle of a given angle that you enter OR it checks to see if two angles that you enter are complementary or supplementary.

This calculator has 3 inputs.

This calculator has 3 inputs.

- IF an angle is less than 90°, then the complementary angle is 90 - θ
- IF an angle is less than 1800°, then the supplementary angle is 180 - θ

For more math formulas, check out our Formula Dossier

- angle
- the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.
- complementary and supplementary angles
- complementary angle
- Two angles are complementary angles if the sum of their measures is equal to 90°
- supplementary angle