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Such a triangle has the same area as the quadrilateral and can be constructed from it by cutting and pasting. If only one shape of tile is allowed, tilings exists with convex N -gons for N equal to 3, 4, 5 and 6. Voronoi or Dirichlet tilings are tessellations where each tile is defined as the set of points closest to one of the points in a discrete set of defining points. Think of geographical regions where each region is defined as all the points closest to a given city or post office.
The Delaunay triangulation is a tessellation that is the dual graph of a Voronoi tessellation. Delaunay triangulations are useful in numerical simulation, in part because among all possible triangulations of the defining points, Delaunay triangulations maximize the minimum of the angles formed by the edges.
Tessellation can be extended to three dimensions. Certain polyhedra can be stacked in a regular crystal pattern to fill or tile three-dimensional space, including the cube the only Platonic polyhedron to do so , the rhombic dodecahedron , the truncated octahedron , and triangular, quadrilateral, and hexagonal prisms , among others. A Schwarz triangle is a spherical triangle that can be used to tile a sphere.
Tessellations in three or more dimensions are called honeycombs. In three dimensions there is just one regular honeycomb, which has eight cubes at each polyhedron vertex. Similarly, in three dimensions there is just one quasiregular [c] honeycomb, which has eight tetrahedra and six octahedra at each polyhedron vertex. However, there are many possible semiregular honeycombs in three dimensions.
The Schmitt-Conway biprism is a convex polyhedron with the property of tiling space only aperiodically. It is possible to tessellate in non-Euclidean geometries such as hyperbolic geometry. A uniform tiling in the hyperbolic plane which may be regular, quasiregular or semiregular is an edge-to-edge filling of the hyperbolic plane, with regular polygons as faces ; these are vertex-transitive transitive on its vertices , and isogonal there is an isometry mapping any vertex onto any other.
A uniform honeycomb in hyperbolic space is a uniform tessellation of uniform polyhedral cells. In 3-dimensional hyperbolic space there are nine Coxeter group families of compact convex uniform honeycombs , generated as Wythoff constructions , and represented by permutations of rings of the Coxeter diagrams for each family. In architecture, tessellations have been used to create decorative motifs since ancient times.
Mosaic tilings often had geometric patterns. Some of the most decorative were the Moorish wall tilings of Islamic architecture , using Girih and Zellige tiles in buildings such as the Alhambra [66] and La Mezquita.
Tessellations frequently appeared in the graphic art of M. Escher ; he was inspired by the Moorish use of symmetry in places such as the Alhambra when he visited Spain in Tessellated designs often appear on textiles, whether woven, stitched in or printed.
Tessellation patterns have been used to design interlocking motifs of patch shapes in quilts. Tessellations are also a main genre in origami paper folding , where pleats are used to connect molecules such as twist folds together in a repeating fashion.
Tessellation is used in manufacturing industry to reduce the wastage of material yield losses such as sheet metal when cutting out shapes for objects like car doors or drinks cans. Tessellation is apparent in the mudcrack -like cracking of thin films [77] [78] — with a degree of self-organisation being observed using micro and nanotechnologies. The honeycomb provides a well-known example of tessellation in nature with its hexagonal cells. In botany, the term "tessellate" describes a checkered pattern, for example on a flower petal, tree bark, or fruit.
Flowers including the fritillary [81] and some species of Colchicum are characteristically tessellate. Many patterns in nature are formed by cracks in sheets of materials. These patterns can be described by Gilbert tessellations , [83] also known as random crack networks. The model, named after Edgar Gilbert , allows cracks to form starting from randomly scattered over the plane; each crack propagates in two opposite directions along a line through the initiation point, its slope chosen at random, creating a tessellation of irregular convex polygons.
The extensive crack networks that develop often produce hexagonal columns of lava. One example of such an array of columns is the Giant's Causeway in Northern Ireland. Other natural patterns occur in foams ; these are packed according to Plateau's laws , which require minimal surfaces. Such foams present a problem in how to pack cells as tightly as possible: in , Lord Kelvin proposed a packing using only one solid, the bitruncated cubic honeycomb with very slightly curved faces.
In , Denis Weaire and Robert Phelan proposed the Weaire—Phelan structure , which uses less surface area to separate cells of equal volume than Kelvin's foam. Tessellations have given rise to many types of tiling puzzle , from traditional jigsaw puzzles with irregular pieces of wood or cardboard [89] and the tangram [90] to more modern puzzles which often have a mathematical basis.
For example, polyiamonds and polyominoes are figures of regular triangles and squares, often used in tiling puzzles. For example, Dudeney invented the hinged dissection , [93] while Gardner wrote about the rep-tile , a shape that can be dissected into smaller copies of the same shape.
Triangular tiling , one of the three regular tilings of the plane. Snub hexagonal tiling , a semiregular tiling of the plane. Floret pentagonal tiling , dual to a semiregular tiling and one of 15 monohedral pentagon tilings. The Voderberg tiling , a spiral, monohedral tiling made of enneagons. Alternated octagonal or tritetragonal tiling is a uniform tiling of the hyperbolic plane. There is a list of all authors in Wikipedia.
Login Email Address. Sign In. Remember Me. Forgot Password? Top Links. Social Share. PARTcloud - mesh. No results were found. For the song by Alt-J, see Tessellate song. For the computer graphics technique, see Tessellation computer graphics. Further information: Euclidean tilings of regular polygons , Uniform tiling , and List of convex uniform tilings.
Main article: Wallpaper group. Main articles: Aperiodic tiling and List of aperiodic sets of tiles. Further information: four colour theorem. Main article: Honeycomb geometry. Further information: Mathematics and art.
Main article: Patterns in nature. Main articles: Tiling puzzle and recreational mathematics. A honeycomb is a natural tessellated structure. ISBN Mosaics of the Greek and Roman world. Cambridge University Press. Hull City Council. Retrieved 26 May Geometric Patterns from Roman Mosaics. Harmonices Mundi [ Harmony of the Worlds ]. Los Alamos National Laboratory. Retrieved 6 April Petersburg Mineralogical Society], series 2 in Russian. Colored Symmetry.
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