Easily determine all interior and exterior angles of a triangle. Our intuitive calculator simplifies complex geometry problems, providing accurate results instantly. Just enter two known interior angles, and we'll calculate the rest!
Formula:
A triangle's interior angles always sum to 180°. An exterior angle is supplementary to its adjacent interior angle (meaning they sum to 180°), and is also equal to the sum of the two opposite interior angles.
- Interior Angle 3 (C) = 180° - (Interior Angle 1 (A) + Interior Angle 2 (B))
- Exterior Angle 1 (Ext A) = 180° - Interior Angle 1 (A)
- Exterior Angle 2 (Ext B) = 180° - Interior Angle 2 (B)
- Exterior Angle 3 (Ext C) = 180° - Interior Angle 3 (C)