This Triangle Sum Theorem: Lesson video also includes:
The measures all add up. The presentation, part of a helpful playlist on geometry, provides the statement of the Triangle Sum Theorem. Using the theorem, the video shows how to find the missing measure of an angle.
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- Develop a proof of the Triangle Sum Theorem
- Individuals should know how to solve linear equations
- The class should be familiar with different types of triangles
- Works a variety of problems using the Triangle Sum Theorem
- Links to other CK-12 resources on finding the angle of a triangle