Tetrahedron

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Index Entry

Tetrahedron:

"For every tetrahedron there is one convex and one concave. Because the tetrahedron is inherently the minimum structural system, it provides the minimum omni-coexisting convexity and concavity condition in universe.

"For every tetrahedron there is an inside tetrahedron and an outside tetrahedron. . . Spherical arrays and compound curvature begin with the tetrahedron."

Citations

1. Synergetics draft Secs. 810.2 and 810.3, 22 July 1971.