This Angles and Sides, Sides and Angles lesson plan also includes:
- Triangle Congruence Possibilities Investigation 2(doc.)
- Triangle Congruence Possibilities Investigation 2(pdf)
- Triangle Congruence Possibilities(doc.)
- Triangle Congruence Possibilities(pdf)
- Proof Puzzles
- Triangle Congruence Possibilities Investigation(pdf)
- Triangle Congruence Possibilities Investigation 1(doc.)
- Join to access all included materials
Lead by example. Pupils use software to investigate given measures of sides and angles to determine whether they create congruent triangles. Using the discovered triangle congruences, learners put together proofs.
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CCSS:
Adaptable
Instructional Ideas
- Ask learners to determine if the congruence statement still holds if the measurements were different
Classroom Considerations
- Needs access to GeoGebra or another dynamic geometry software
- Assumes the class knows the definition of congruence for triangles
Pros
- Includes directions on how to group the class for parts of the lesson
- Provides suggestions if technology is not available
Cons
- None
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