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Three years later, Augustin Cauchy proved the list complete by stellating the Platonic solids, and almost half a century after that, in 1858, Bertrand provided a more elegant proof by faceting them. The following year, Arthur Cayley gave the Kepler–Poinsot polyhedra the names by which they are generally known today.
1.4 Kepler-Poinsot solids. 1.5 Achiral nonconvex uniform polyhedra. 2 Chiral Archimedean and Catalan solids. ... Printable version; In other projects Wikidata item;
The regular star polyhedra are called the Kepler–Poinsot polyhedra and there are four of them, based on the vertex arrangements of the dodecahedron {5,3} and icosahedron {3,5}: As spherical tilings, these star forms overlap the sphere multiple times, called its density, being 3 or 7 for these forms.
Print/export Download as PDF; Printable version; In other projects Wikidata item; Appearance. move to sidebar hide ... 5 Platonic solids: 4 Kepler–Poinsot solids: 3 ...
Platonic solids (5, convex, regular) Archimedean solids (13, convex, uniform) Kepler–Poinsot polyhedra (4, regular, non-convex) Uniform polyhedra (75, uniform) Prismatoid: prisms, antiprisms etc. (4 infinite uniform classes) Polyhedra tilings (11 regular, in the plane) Quasi-regular polyhedra Johnson solids (92, convex, non-uniform) Bipyramids
The Kepler–Poinsot polyhedra may be constructed from the Platonic solids by a process called stellation. The reciprocal process to stellation is called facetting (or faceting). Every stellation of one polyhedron is dual, or reciprocal, to some facetting of the dual polyhedron. The regular star polyhedra can also be obtained by facetting the ...
In geometry, the small stellated dodecahedron is a Kepler–Poinsot polyhedron, named by Arthur Cayley, and with Schläfli symbol {5 ⁄ 2,5}. It is one of four nonconvex regular polyhedra. It is composed of 12 pentagrammic faces, with five pentagrams meeting at each vertex. It shares the same vertex arrangement as the convex regular icosahedron.
This category was created to reference the full set of 75 nonprismatic uniform polyhedra, as well as prismatic forms. It is a subset of Category:Polyhedra.. It is a union of 5 Platonic solids, 4 Kepler–Poinsot solids, 13 Archimedean solids, and the infinite prismatic sets in Prismatoid polyhedra, and adds 53 non-convex, non-regular uniform polyhedra.