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Homework Help: Calculating the normal vector to the surface

  1. Oct 4, 2009 #1
    I know this is really basic, but I just can't seem to remember...

    Say you have three points (0,0,2),(0,2,0) and (2,0,0) to form a triangle. How do you calculate the normal to the surface?
  2. jcsd
  3. Oct 5, 2009 #2


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    Welcome to PF!

    Hi Natalie89! Welcome to PF! :wink:

    Hint: it has to be perpendicular to any two vectors in the surface …

    so find any two vectors, and use the cross product :smile:
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