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Reductio ad Absurdium!

  1. Oct 17, 2005 #1
    This is question I am really stuck with, please help if you can. (Its by indirect proof).
    Question: The medians BD and CE in triangle ABC are produced to X and Y respectively so that BD = DX and CE = EY. Prove that X, A, and Y lie in a straight line.
    Last edited: Oct 17, 2005
  2. jcsd
  3. Oct 17, 2005 #2
    Here is what I have so far:

    Attached Files:

    Last edited: Oct 17, 2005
  4. Oct 17, 2005 #3
    No need in absurdum!

    Connect C and X and see what helpful figure you are getting.
    Same for B and Y.
    Precise drawing would help.
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