Two Congruent Triangles

See how parallelograms can produce congruent triangles. Given a diagram of a parallelogram, scholars must show that two triangles are congruent. The triangles are made from the diagonals of the parallelogram.

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CCSS: Designed
Instructional Ideas

  • Apply the worksheet as homework
Classroom Considerations

  • Pupils must be aware of the properties of parallelograms
  • Learners should also have experience with proof techniques
Pros

  • Provides some instructional implications for different misconceptions
  • Includes examples of student work
Cons

  • Parts of the PDF version of the rubric are illegible
Common Core