reflectional symmetry

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• Symmetry — For other uses, see Symmetry (disambiguation) …   Wikipedia

• Symmetry group — Not to be confused with Symmetric group. This article is about the abstract algebraic structures. For other meanings, see Symmetry group (disambiguation). A tetrahedron can be placed in 12 distinct positions by rotation alone. These are… …   Wikipedia

• List of planar symmetry groups — This article summarizes the classes of discrete planar symmetry groups: #2 infinite set of point groups #7 Frieze groups #17 wallpaper groups Point groups There are two classes of point groups, rotational and reflectional.Point groups: Maximum… …   Wikipedia

• Rectangle — Family Orthotope Type Quadrilateral Edges and vertices 4 Schläfli symbol {}x{} …   Wikipedia

• Trihexagonal tiling — In geometry, the trihexagonal tiling is a semiregular tiling of the Euclidean plane. There are two triangles and two hexagons alternating on each vertex. It has Schläfli symbol of t1{6,3} .Conway calls it a hexadeltille, combining alternate… …   Wikipedia

• Coxeter–Dynkin diagram — See also: Dynkin diagram Coxeter Dynkin diagrams for the fundamental finite Coxeter groups …   Wikipedia

• Convex uniform honeycomb — The alternated cubic honeycomb is one of 28 space filling uniform tessellations in Euclidean 3 space, composed of alternating yellow tetrahedra and red octahedra. In geometry, a convex uniform honeycomb is a uniform tessellation which fills three …   Wikipedia

• Square (geometry) — In Euclidean Geometry geometry, a square is a regular polygon with four equal sides. In Euclidean geometry, it has four 90 degree angles. A square with vertices ABCD would be denoted squarenotation|ABCD. Classification A square (regular… …   Wikipedia

• Swastika — This article is about the symbol. For the town, see Swastika, Ontario. The counter clock swastika to evoke shakti in the decorative Hindu form …   Wikipedia

• Anti de Sitter space — In mathematics and physics, n dimensional anti de Sitter space, sometimes written AdS n, is a maximally symmetric Lorentzian manifold with constant negative scalar curvature. It is the Lorentzian analog of n dimensional hyperbolic space, just as… …   Wikipedia

• Truncated hexagonal tiling — In geometry, the truncated hexagonal tiling is a semiregular tiling of the Euclidean plane. There are 2 dodecagons (12 sides) and one triangle on each vertex. As the name implies this tiling is constructed by a truncation operation applies to a… …   Wikipedia