Triangle Angle Sum - Concept

Concept Concept (1)

The sum of the three angles in any triangle sum to 180 degrees. The importance of this fact in Geometry cannot be emphasized enough. The triangle angle sum theorem is used in almost every missing angle problem, in the exterior angle theorem, and in the polygon angle sum formula.

Sample Sample Problems (2)

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Triangle Angle Sum - Problem 1
Problem 1
How to apply the triangle angle sum theorem in order to find missing angles.
Triangle Angle Sum - Problem 2
Problem 2
How to apply the triangle angle sum theorem in order to solve for x.