Fig. 100.120
Fig. 100.120 Image of Icosa and Tetra: Photograph of a truncated glass tetrahedron with frosted triangular facets producing an image of clustered tetrahedra that approximate an icosahedron. (See discussion at Sec. 934)
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Icosa and Tetra: The icosahedron concentric within, but flushly askew, in the four-frequency truncated tetrahedron completes the whole cosmic hierarchy as subdivisioning of the primitive unity of the tetrahedron__one quantum__the minimum structural system of Universe. Looked at perpendicularly to the middle of any of the tetrahedron’s four truncated faces__as a line of sight__the icosahedron appears at the center of volume of the tetrahedron as a four-dimensional symmetrical structure. (See Fig. 100.120)
