Lesson Plan

Triangle Congruency Proofs (part 2)

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Looking to challenge your students that have mastered basic triangle congruence proofs? A collection of proofs employ previously learned definitions, theorems, and properties. Pupils draw on their past experiences with proofs to accomplish the task.

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CCSS: Designed
Additional Tags
Instructional Ideas
  • Create collaborative groups to complete the set of six proofs, with one proof for each group to put on the board for analysis
Classroom Considerations
  • Provide guidance through the completion of the proofs to improve confidence
  • Create fill-in-the blank proofs or envelop proofs to build confidence before attempting the proofs individually
  • Previous experience with basic triangle congruence proofs is required
Pros
  • The proofs provided have a progressive level of difficulty
Cons
  • Guidance for instruction is not provided; the content of the lesson is six proofs to be completed individually
Common Core