Triangle Angle Calculator

Find the third angle of a triangle.

Third angle (°) 70

Formula: third = 180 − angle1 − angle2

Step-by-step with your numbers:

1. Values used:

2. Angle 1 = 50 °

3. Angle 2 = 60 °

5. Third angle = 70°

Did we solve your problem today?

The angles of any triangle sum to 180°.

The math behind it

third angle = 180° − the other two angles.

50° + 60° → third 70°.

Negative result?

Then the first two angles are impossible for a triangle.