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This Conjectures and Proof interactive also includes:
Transform proofs using triangle rotations. By rotating a triangle around various points, class members develop proofs. Participants prove relationships of alternative interior angles formed by parallel lines and the sum of the interior angles of a pentagon.
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CCSS:
Adaptable
Concepts
Additional Tags
Instructional Ideas
- Create groups to share the sequences used to answer the questions
- Demonstrate how to use each of the tools prior to the activity
Classroom Considerations
- The class should be familiar with rotations as transformations
Pros
- Provides initial directions on how to use the tools
- Contains sliders for multiple rotations
Cons
- None