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What does the upside down T mean

  1. May 5, 2009 #1
    what does the upside down T mean
     
  2. jcsd
  3. May 5, 2009 #2

    berkeman

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    Staff: Mentor

    Re: Math

    Welcome to the PF. Can you post a link to an example of the character? What context is it used in?
     
  4. May 6, 2009 #3

    Redbelly98

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    Staff Emeritus
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    Re: Math

    In geometry, it means "is perpendicular to".
     
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