21. The polyhedral model handles a wider class of programs and transformations than the unimodular framework. 22. There are exactly 257 combinatorially distinct vertices ( or polyhedral graphs with eight nodes ). 23. Electron micrograph of Synechococcus elongatus PCC 7942 cell showing the carboxysomes as polyhedral dark structures. 24. The smallest possible number of vertices for a non-hamiltonian polyhedral graph is 11. 25. The hidden inner pentagons are no longer part of the polyhedral surface, and can disappear. 26. The markings are generally along leaf keels or margins, giving a sort of polyhedral appearance. 27. Uniform polyhedra with circumradii less than 1 can be make polyhedral pyramids with regular tetrahedral sides. 28. Every polyhedral cone can be described in two different ways : with inequalities or conic combinations. 29. Polyhedral cones play a central role in the representation theory of bounded polyhedron is a polytope.30. Every topological surface is homeomorphic to a polyhedral surface such that all genus and homology groups.
