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This Congruence Criteria for Triangles—ASA and SSS lesson plan also includes:
- Congruence, Proof, and Constructions - Module Overview (PDF)
- Congruence, Proof, and Constructions - Module Overview (Doc)
- Congruence Criteria for Triangles—ASA and SSS (Doc)
- Congruence Criteria for Triangles—ASA and SSS (PDF)
- Congruence Criteria for Triangles—ASA and SSS (Doc)
- Assessment
- Answer Key
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How do you know if a pair of triangles are congruent? Use the activity to help class members become comfortable identifying the congruence criteria. They begin with an exploration of ASA and SSS criteria through transformations and SAS before recognizing the criteria in different figures and before completing formal proofs.
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Instructional Ideas
- Use a graphic organizer to record different examples of ASA, SSS, and SAS criteria
- Ask pupils to create examples for a partner to analyze
Classroom Considerations
- Learners must have a strong understanding of the SAS criteria of congruence, transformations, and isosceles triangles
Pros
- Uses a logical progression of examples
- Detailed notes are provided to aid in instruction
Cons
- None