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This Angles and Sides, Sides and Angles lesson plan also includes:
- Angles and Sides, Sides and Angles (.html)
- Proof Puzzles—Angles and Sides, Sides and Angles (.pdf)
- Triangle Congruence Possibilities Investigation 1—Angles and Sides, Sides and Angles, English (.pdf)
- Triangle Congruence Possibilities Investigation 1—Angles and Sides, Sides and Angles, English (.docx)
- Triangle Congruence Possibilities Investigation 1—Angles and Sides, Sides and Angles, Spanish (.pdf)
- Triangle Congruence Possibilities Investigation 1—Angles and Sides, Sides and Angles, Spanish (.docx))
- Triangle Congruence Possibilities Investigation 2—Angles and Sides, Sides and Angles, English (.pdf)
- Triangle Congruence Possibilities Investigation 2—Angles and Sides, Sides and Angles, English (.docx))
- Triangle Congruence Possibilities Investigation 2—Angles and Sides, Sides and Angles, Spanish (.pdf)
- Triangle Congruence Possibilities Investigation 2—Angles and Sides, Sides and Angles, Spanish (.docx))
- Triangle Congruence Possibilities—Angles and Sides, Sides and Angles (.docx)
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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
Concepts
Additional Tags
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