1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Coplanar Parallelepiped

  1. Apr 17, 2008 #1
    I have just completed a question in which I have determined:

    (axb).c = 0 = det [a,b,c]

    Where: a = (1,1,2) b = (2,3,4) c = (1,-2,2)

    With some googling, I established this meant the parallelepiped to be coplanar but I'm not sure exactly what this means. If anyone could offer me some assistance with this I would be most grateful.

  2. jcsd
  3. Apr 17, 2008 #2


    User Avatar
    Science Advisor
    Homework Helper

    It means that all of the edges of your parallelepiped lie in the same plane. So the box is squashed flat and has no volume.
  4. Apr 17, 2008 #3
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Coplanar Parallelepiped
  1. Coplanar vectors (Replies: 4)