¶ Tetrahedron
Index Entry
Tetrahedron:
“A polyhedron having four equal equilateral triangular plane faces or sides. Like the octahedron, it may be skeletal, continuous, or a combination of the skeletal and continuous forms.”
¶ Citations
- Patent I’o. 2,986,241. I’ay 30, 1961 SYNERGETIC BUILDING CONSTRUCTION
