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This Exterior Angles Theorems: Lesson instructional video also includes:
Use the inside to find the outside. The resource presents two theorems dealing with exterior angles of a triangle. Using the two theorems, the segment from a larger geometry playlist works problems to solve for angle measures.
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CCSS:
Adaptable
Concepts
Additional Tags
Instructional Ideas
- Have individuals describe an informal proof of the two exterior angle theorems
Classroom Considerations
- Individuals should know the Triangle Angle Sum Theorem
- The class should know how to solve linear equations
- This video is hosted on YouTube
Pros
- Uses colors to highlight different sets of angles
- Links to other CK-12 resource on exterior angles
Cons
- None