Isotoxal figure 2-dimensional tessellation constructed from regular polygons is isotoxal. For instance, the truncated icosahedron (the familiar soccerball) has two types of edges: hexagon-hexagon and hexagon-pentagon, and it is not possible for a symmetry of the solid to move a hexagon-hexagon edge onto a hexagon-pentagon edge. An isotoxal polyhedron has the same dihedral angle for all edges. There are nine convex isotoxal polyhedra formed from the Platonic solids, 8 formed by the Kepler–Poinsot polyhedra, and six more as quasiregular (3 | p q) star polyhedra and their duals. There are at least 5 polygonal tilings of the Euclidean plane that are isotoxal,
Campaign Hexagon System Campaign Hexagon System Campaign Hexagon System is a supplement for fantasy role-playing games published by Judges Guild in 1977. "Campaign Hexagon System" is a GM's aid: a book of blank hexagon sheets overprinted with larger gray hexes so the GM can integrate wilderness maps of varying scales. It includes tables for generating wilderness terrain. "Campaign Hexagon System" is a booklet of which the main portion is devoted to over 60 blank campaign hex grids. A rectangular hexagonal tessellation of about 1000 small hexes appears on each page, and on this grid is superimposed a large hex representing 5 miles across