Finding the converse of Euclid's fifth postulate (parallel postulate)

  1. 1. The problem statement, all variables and given/known data

    I have to state the converse of the following sentence:

    3. The attempt at a solution

    The statement is a mouthful, so I just want to make sure I got the converse right.

  2. jcsd
  3. Stephen Tashi

    Stephen Tashi 4,474
    Science Advisor
    2014 Award

    I think you'd do better to begin "If two lines produced indefinitely meet on a side of a straight line that falls upon them then on that side ...."

    Are you taking old fashioned geometry?
  4. HallsofIvy

    HallsofIvy 41,265
    Staff Emeritus
    Science Advisor

    The converse of any statement of the form "if A then B" is "if B then A".
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