Tessellation

A collection of shapes that fit together to cover a surface without overlapping or leaving gaps. Often a repeating geometric pattern, many of which may also be referred to as tiling. Types of tessellations include translation, rotation, and reflection. They can be regular or irregular (a regular tessellation is made up of congruent regular polygons — triangles, squares or hexagons), periodic and non-periodic, two- and three-dimensional, and their motifs can be fractals (self-replicating). Tesselations can be seen in almost every brick wall, tiled floor or wall, quilt pattern, lace tablecloth, fabric and wallpaper pattern. (Artlex.com)

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