 # Complementary and Supplementary Angles Calculator

## Enter Angle for Comp/Supp Check

### How does the Complementary and Supplementary Angles Calculator work?

Free Complementary and Supplementary Angles Calculator - 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.

### What 2 formulas are used for the Complementary and Supplementary Angles Calculator?

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

### What 4 concepts are covered in the Complementary and Supplementary Angles Calculator?

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