Regular Tetrahedron (2)

← Regular Polyhedra (2) | Regular = Uniangular →

Index Entry

Regular Tetrahedron:

"The four obtuse central angles of convergence of the four perpendiculars of the regular tetrahedron pass convergently through the center of the tetrahedral volume at 109° 28'."

Citations

1. SYNERGETICS draft at Sec. 966.22 (Gray) 29 Nov'72