Talk:Coxeter diagram

Edge lengths
Unmarked nodes are zero length edges, or 'o'. Marked edges are x, x marks the spot. The polygon which makes the horizon, is of U sides, of length R. The angle 2pi/U is the smallest resolvable angle, and R is the largest distance one is prepared to traverse the points of. The short chord of U is u which gives 2.

The length r is two points on either side of a mirror, as o|o, allows for figures of zeroish length. So r4o3o is a cube of edge near zero, while o4o3o is a point.

m is used for the dual of x, so o3x4o is a CO, and o3m4o is a rhombic dodecanedron. A special wythof mirror margin construction makes these. --Wendy.krieger (talk) 04:16, 25 July 2020 (UTC)