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A general (not necessarily regular) tetrahedron, defined as a convex polyhedron consisting of four (not necessarily identical) triangular faces can be specified by its polyhedron vertices as , where , ..., 4. Then the volume of the tetrahedron is given by.
Vocabulary and More Drawing! A polyhedron is a geometric solid made up of polygon faces which meet. at straight-line edges that come together at vertices. Like polygons, polyheda are named with prefixes we have already used. Octahedron = 8 sides. Hexahedron = 6 sides.