Fig. 536.03 Domains of Vertexes, Faces, and Edges of
Systems:
- The domain of the vertex of a system: the domain
of each vertex of the icosahedron is a pentagon
whose edges connect the centers of gravity of five icosahedron
face triangles. The resulting figure is the
pentagonal dodecahedron.
- The domain of the face of a system: The domain of
each face of the icosahedron is the triangular face
itself.
- The domain of the edge of a system: The domain of
each edge of the icosahedron is a diamond formed
by connecting the vertexes of two adjacent icosahedron
face triangles with their centers of gravity.
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