Posted by Jordan on Sunday, March 30, 2008 at 11:52pm.
Sum of all the lines. A triangular pyramid has 6 lines so add all those together. Interesting question >.>, I never took the perimeter of a three dimensional object or even heard of it so I may be wrong..
Oh there is no such thing as perimeter of a three dimensional object so your question is quite err.. whats a good word for it.. contradictory?
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