The fully developed feature is Chi-Rho with the foundations in the golden triangle-
https://www.geogebra.org/resource/sxEMtV6q/0DTICmpFzNPJWEDy/material-sxEMtV6q.png
The three remaining angles are in proportion to 4, 3 and 2 thereby completing the arrangement of non-periodic tiling as 36°, 72°, 108° and 144°.
Many artists, and notably Kepler in astronomy, tried to work this geometry into their perspectives as the geometric proportion known as Phi. Although the subject receives a dry expression in mathematical terms, it is so enjoyable and satisfying for those
who permit creation to express itself in geometry rather than non-geometric treatments found in equations and suchlike.
https://en.wikipedia.org/wiki/Kepler_triangle
The approximation of 1.618033.. is 1.62 so just as 432° is 1.2 times 360°, then the expansion of 1.62 by doubling it gives meaningful numbers in timekeeping and geometry at large scales.
1.62 - 3.24 - 6.48 - 12.96 -25.92 - 51.84
25 - 30 - 36 - 43.2 - 51.84
The angle of inclination of the Great Pyramid is 51.84 ° incorporating a triangle, and square with a high Phi content. Perfect for those who can enjoy geometry at this level of consideration without favour or fact to this era that is always trying to
mesh geometry with timekeeping.
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