Three are three angles in a triangle which all add up to exactly 180 degrees.
A triangle is one of the basic shapes of geometry: a polygon with three corners or vertices and three sides or edges which are line segments. A triangle with vertices A, B, and C is denoted ABC. If all the three sides of a triangle are equal, than all 3 angles will be equal (each will be of 60 degrees). If two sides are equal, the two angles will be equal. If all sides are different, than all angles will be different.
Degrees in a Triangle Example
A + B + C = 180°
60°+60°+60° = 180°