Building Intuitive Arguments for the Triangle Congruence Conditions

  • Building Intuitive Arguments for the Triangle Congruence Conditions

    Katrina Piatek-Jimenez
    A hands-on activity that uses straws and pipe cleaners to explore and justify the triangle congruence conditions. The author uses the activities to explain when and why an idea is a postulate, theorem, accepted without need for proof, which ones need proof.
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