 This construction requires "q" to be even.A quasiregular polyhedron formula_4 or "r"{"p","q"}, with Coxeter diagram or has a quasiregular truncation defined as formula_5 or "tr"{"p","q"}, and Coxeter diagram or and quasiregular snub defined as an alternated truncated rectification formula_6 or "htr"{"p","q"} = "sr"{"p","q"}, and Coxeter diagram or .For example, Kepler's snub cube is derived from the quasiregular cuboctahedron, with a vertical Schläfli symbol formula_7, and Coxeter diagram , and so is more explicitly called a snub cuboctahedron, expressed by a vertical Schläfli symbol formula_8 and Coxeter diagram .