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Parallel lines

  1. May 27, 2015 #1
    Can a line be parallel to itself???
  2. jcsd
  3. May 27, 2015 #2

    Simon Bridge

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    Welcome to PF;
    ... to answer your question, 1st write down the definition of "parallel".
  4. May 27, 2015 #3


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    Yes, every line is parallel to itself.
  5. May 27, 2015 #4


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    parallelism is reflexive and is an equivalence relation.
  6. May 27, 2015 #5
    thanks for your answers
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