Performance

Triangles in Parallelograms

Curated and Reviewed by Lesson Planet
This Triangles in Parallelograms performance also includes:

What's the point of looking at triangles when trying to draw parallelograms? Given three non-collinear points, pupils determine and justify all possible points that would create a parallelogram. They then analyze the four triangles that form from all of the points and prove any relationships.

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CCSS: Adaptable
Additional Tags
Instructional Ideas
  • Give learners the choice of using geometry software to help investigate different cases
Classroom Considerations
  • Scholars must have knowledge of congruence and similarity
  • Assumes students understand the properties of triangles and parallelograms 
Pros
  • Provides possible solutions
  • Lists some optional journal writing prompts
Cons
  • None
Common Core