by 19521chaos July 21, 2025
by 19521chaos July 24, 2025
by 19521chaos July 24, 2025
Tet is in three out of six regular polychora, appearing five times in pen, sixteen times in hex, and six hundred times in ex.
by 19521chaos July 21, 2025
A polyhedron with 20 faces, usually referring to the triangular icosahedron, one of the five platonic solids. (pl. icosahedra, more rarely icosahedrons)
Examples of icosahedra are the decagonal bipyramid, the decagonal trapezohedron, the octadecagonal prism, the enneadecagonal pyramid, the enneagonal antiprism, and the platonic icosahedron
by 19521chaos July 24, 2025