The regular hyperbolic honeycombs thus include two with four or five dodecahedra meeting at each edge; their dihedral angles thus are π/2 and 2π/5, both of which are less than that of a Euclidean dodecahedron.
This passage describes the unique geometry of hyperbolic honeycombs, highlighting their specific arrangement of dodecahedra and the smaller dihedral angles compared to a standard Euclidean dodecahedron.