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986.414
The vertical central-altitude line of the regular,
primitive, symmetrical
tetrahedron may be uniformly subdivided into four vertical
sections, each of which we may
speak of as quarter-prime-tetra altitude units-each
of which altitude division points
represent the convergence of the upper apexes of the
A, B, C, D, A', B', C', D', A", B",
C", D" . . . equivolume modules (as illustrated in Fig.
923.10B where__prior to the
discovery of the E "Einstein" Module__additional modules
were designated E through H,
and will henceforth be designated as successive ABCD,
A'B'C'D', A"B"C"D" . . .
groups). The vertical continuance of these unit-altitude
differentials produces an infinite
series of equivolume modules, which we identify in vertical
series continuance by groups
of four repetitive ABCD groups, as noted parenthetically
above. Their combined group-of-
four, externally protracted, altitude increase is always
equal to the total internal altitude of
the prime tetrahedron.
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