Calculatrice d'Angles de Triangle Gratuite
Trouvez les angles d'un triangle à partir des côtés ou d'autres angles. Utilisez les propriétés des triangles pour résoudre.
degrees
degrees
Angle C
50.00 degrees
Sum Check180 degrees
Triangle Type0
Formule
How to Find a Missing Triangle Angle
Formula
Angle C = 180° - Angle A - Angle B
The sum of all interior angles of a triangle is always 180 degrees. If you know two angles, you can find the third by subtracting their sum from 180.
Triangle Types by Angles
Exemple Résolu
A triangle has angles of 60° and 70°. Find the third angle.
- 01Angle C = 180° - 60° - 70°
- 02= 180° - 130°
- 03= 50°
Questions Fréquentes
Why do triangle angles add up to 180 degrees?
This is a fundamental property of Euclidean geometry. It can be proven by drawing a line parallel to one side through the opposite vertex and using alternate interior angles.
Can a triangle have two right angles?
No. Two right angles would sum to 180°, leaving 0° for the third angle, which is impossible. A triangle can have at most one right angle or one obtuse angle.
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