What does the upside down T mean

  1. what does the upside down T mean
  2. jcsd
  3. berkeman

    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. Redbelly98

    Redbelly98 12,046
    Staff Emeritus
    Science Advisor
    Homework Helper

    Re: Math

    In geometry, it means "is perpendicular to".
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