¶ Sphinx
← Sphericity (1) | TETRAHEDRON AND VECTOR-EQUILIBRIUM →
Index Entry
"Four planes of the tetrahedron going through the same
point at the same time: The zero volume terahedron: Also
this is the vector equilibrium:
Tetrahedron as simplest structure in Universe:
"Tetrahedron as four closest-packed spheres:
"Head of the Sphinx is cross section vertically of vector
equilibrium:
¶ Citations
- RBF postcard to Peter Jahlin, 28 Sep’73
