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Jacques
Posts:
35
Registered:
12/4/04


Re: 3d geometry
Posted:
Dec 2, 2005 4:52 AM


3 in 2D space but 5 in 3D space: Every given line in a tetrahedron makes a 60 degree angle with 4 other lines. Thus, the total is 5 counting the given line as well. (Sounds funny)



