Keywords: Hyperbolic domains 666.png Hyperbolic tiling of p q r fundamental domain triangles in Poincaré Disc projection colored red for odd reflections View centered on p or labeled b c for q r points Topology and and Geometry Software Jeff Weeks cropped from http //geometrygames org/ KaleidoTile software KaleidoTile 1/15/13 Tom Ruen Order-12 triangular tiling Hyperbolic_fundamental_domains |