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Thread: Stuck on 2 column proofs for congruency of triangles

  1. #1
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    Stuck on 2 column proofs for congruency of triangles

    Stuck on 2 column proofs for congruency of triangles-screen-shot-2016-11-14-8.57.25-am.png Ive gotten this done so far, but i'm pretty sure its wrong. Really frustrated with this. Anyone help?


    Rectangle ABCD

    given
    ab=dc opposite sides
    ad=bc opposite sides
    bd=bd
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  2. #2
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    Re: Stuck on 2 column proofs for congruency of triangles



    both "proves" are written incorrectly; they should be written (a) Prove: $\Delta ABD \cong \Delta CDB$ and (b) Prove: $\Delta ABC \cong \Delta CDA$

    note diagonals DB and AC equal themselves by the reflexive property of equality ... so you will have SSS for both proofs, correct?
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