Instructional Video

CPCTC and HL Theorem

Curated and Reviewed by Lesson Planet

The resource is sure to be a right fit for introducing the congruence of right triangles. The fourth of five lessons in the Geometry - Triangle Congruence unit teaches pupils how to use CPCTC to prove congruent parts. They also apply the HL Theorem to prove that two right triangles are congruent.

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CCSS: Adaptable
Instructional Ideas
  • Use the video as part of an intervention strategy for struggling individuals
Classroom Considerations
  • Scholars must be familiar with the triangle congruence criteria from previous installments
  • Expertise with two-column proofs is a prerequisite
  • This video is hosted on YouTube
Pros
  • Worksheet includes space for learners to take notes while viewing the video
  • Answer key is available in a separate file
Cons
  • None
Common Core