Johnson solid

In geometry, a Johnson solid, sometimes also known as a Johnson–Zalgaller solid, is a convex polyhedron whose faces are regular polygons and that is not a uniform polyhedron. There are 92 such solids:

  • 48 composed of the elementary pyramids, cupolas, and rotundas assembled in various ways together with prisms and antiprisms;
  • 35 formed by modifying uniform polyhedra, by augmenting with primitives, diminishing, or gyrating; and
  • 9 which are not derived from "cut-and-paste" manipulations of uniform solids.
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