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| Project Avalon General Discussion Finding safe places, information and resources for building communities, site suggestions. |
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#1 |
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Avalon Senior Member
Join Date: Sep 2008
Posts: 947
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How is it that a tetrahedron inscribed in a sphere touches at 19.5 deg?
A tetrahedron is composed of equilateral traingles which means each of the three angles is exactly 60 deg (666 and half of 360) so that when inscribed in a sphere (which looks like the 2d hexagram or seal of solomon), the points meet at 60 deg exactly, not 19.5. What am I missing? Last edited by Phtha; 01-30-2010 at 01:48 AM. |
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#2 | |
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Avalon Senior Member
Join Date: Sep 2008
Location: england
Posts: 1,153
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