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The five-pointed star, if drawn with points of equal length and angles of 36° at each point, is sometimes termed a golden five pointed star. [7] If the colinear edges are joined, a pentagram is produced, which is the simplest of the unicursal star polygons , and a symbol of mystical and magical significance.
Middle stage patterns on geometric borders around a Mihrab in the Alâeddin Mosque, Konya, Turkey. 1220 onwards. The next development, marking the middle stage of Islamic geometric pattern usage, was of 6- and 8-point stars, which appear in 879 at the Ibn Tulun Mosque, Cairo, and then became widespread. [25]
Two types of star pentagons {5/2} |5/2| A regular star pentagon, {5/2}, has five vertices (its corner tips) and five intersecting edges, while a concave decagon, |5/2|, has ten edges and two sets of five vertices. The first is used in definitions of star polyhedra and star uniform tilings, while the second is sometimes used in planar tilings.
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A constellation is an area on the celestial sphere in which a group of visible stars forms a perceived pattern or outline, typically representing an animal, mythological subject, or inanimate object.
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Kali, a free and open source software application for wallpaper, frieze and other patterns. Kali Archived 2020-11-21 at the Wayback Machine , free downloadable Kali for Windows and Mac Classic. Tess , a nagware tessellation program for multiple platforms, supports all wallpaper, frieze, and rosette groups, as well as Heesch tilings.