It's time to prove one's knowledge of triangle congruence proofs. Scholars watch a video to review triangle classifications and how to use properties of triangles to set up and solve equations for missing values. They also review the triangle congruence criteria (SSS, SAS, ASA, AAS, HL) and apply them in triangle congruence proofs.

Concepts

triangles, triangle classification, congruence, congruent triangles, geometric proofs

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Instructional Ideas

• Have learners review their notes from the previous lessons
  

Classroom Considerations

• Knowledge of basic geometry concepts, such as midpoints, bisectors, vertical angles, and parallel lines, is necessary
  
• This is the last of five installments in the Geometry - Triangle Congruence unit

• This video is hosted on YouTube

Pros

• Provides a corrective assignment for pupils needing additional support
  
• Problems show congruence marks in red, which helps individuals focus on the relevant parts of the triangle
  

Cons

• Lacks an answer key for the worksheet
  

Common Core

HSG-CO.B.7 HSG-CO.B.8 HSG-CO.C.10