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3 points make a plane?

  1. Aug 28, 2008 #1
    If three points make a plane? what does four make 1 also until you reach 6 how does that system work?
  2. jcsd
  3. Aug 28, 2008 #2


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    Four points would define a hyperplane (literally, a 4-dimensional plane), but do not necessarily define a normal 3-dimensional plane -- they may not be coplanar.

    In the same way, three points define a normal 3-dimensional plane, but do not necessarily define a line -- they may not be collinear.

    - Warren
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