_:n556ea62110f142c29d211b49beac093bxb0
<http://schema.org/description>
"The number of yods in a Type B n-gon = 15n + 1. It has 14n yods other than the (n+1) corners of its sectors. A Type B triacontagon (n=30) has 420 yods other than the 31 corners of its sectors. The H4 Coxeter projection of the 120 vertices of the 600-cell consists of 4 concentric triacontagons. (4×420=1680) yods surround their shared centre when they are Type B. This is the number of circular turns in one helical whorl of the UPA. The E8 Coxeter projection of the 240 vertices of the 421 polyto..."
<https://www.64tge8st.com/post/2018/05/06/tree-of-life-superstring-theory-part-145>