rhombic symmetry
51List of mathematics articles (R) — NOTOC R R. A. Fisher Lectureship Rabdology Rabin automaton Rabin signature algorithm Rabinovich Fabrikant equations Rabinowitsch trick Racah polynomials Racah W coefficient Racetrack (game) Racks and quandles Radar chart Rademacher complexity… …
52Crystallographic defects in diamond — Synthetic diamonds of various colors grown by the high pressure high temperature technique, the diamond size is 2 mm …
53Hexagonal lattice — The hexagonal lattice or equilateral triangular lattice is one of the five 2D lattice types.Three nearby points form an equilateral triangle. In images four orientations of such a triangle are by far the most common. They can conveniently be… …
54Coxeter notation — In geometry, Coxeter notation is a system of classifying symmetry groups, describing the angles between with fundamental reflections of a Coxeter group. It uses a bracketed notation, with modifiers to indicate certain subgroups. The notation is… …
55Tetrakis hexahedron — (Click here for rotating model) Type Catalan solid Face type isosceles triangle Faces 24 Edges 36 Vert …
56Snub dodecahedron — (Click here for rotating model) Type Archimedean solid Uniform polyhedron Elements F = 92, E = 150, V = 60 (χ = 2) Faces by sides (20+60 …
57Cupola (geometry) — For other uses, see cupola (disambiguation). Pentagonal cupola (example) Type Set of cupolas Faces n triangles, n squares 1 n agon, 1 2n agon Edges …
58Klemperer rosette — A Klemperer rosette is a gravitational system of a heavier and lighter bodies orbiting in a regular repeating pattern around a common barycenter. It was first described by W. B. Klemperer in 1962. [cite journal| journal=Astronomical Journal|… …
59Dihedron — Set of regular n gonal dihedrons Example hexagonal dihedron on a sphere Type Regular polyhedron or spherical tiling Faces 2 n gons Edges n Vertices …
60Compound of cube and octahedron — Type Compound Stellation core cuboctahedron Convex hull Rhombic dodecahedron …
