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A pentagram can be drawn as a star polygon on a sphere, composed of five great circle arcs, whose all internal angles are right angles. This shape was described by John Napier in his 1614 book Mirifici logarithmorum canonis descriptio (Description of the wonderful rule of logarithms) along with rules that link the values of trigonometric ...
The five-pointed star also came to be widely used in military badges in the 19th century. A red star was used as the badge of XII Corps of the Union Army in the American Civil War, while VII Corps used a five-pointed star in a crescent. In 1916, a five-pointed red star was used by the U.S. Army Signal Corps' aviation section. [7]
The {5/2} star pentagon is also known as a pentalpha or pentangle, and historically has been considered by many magical and religious cults to have occult significance. The {7/2} and {7/3} star polygons ( heptagrams ) also have occult significance, particularly in the Kabbalah and in Wicca .
Star with five points, outlined diagonals: Pentagram: Date: 10 February 2011: Source: Own work: Author: sarang: Permission (Reusing this file) PD-shape/PD-ineligible: Other versions: Five-pointed star.svg and Five Pointed Star Solid.svg and STAR OF YOONIR SERER COSMOLOGY.jpg
In geometry, a dodecagram (from Greek δώδεκα (dṓdeka) 'twelve' and γραμμῆς (grammēs) 'line' [1]) is a star polygon or compound with 12 vertices. There is one regular dodecagram polygon (with Schläfli symbol {12/5} and a turning number of 5). There are also 4 regular compounds {12/2}, {12/3}, {12/4}, and {12/6}.
In geometry, a decagram is a 10-point star polygon. There is one regular decagram, containing the vertices of a regular decagon, but connected by every third point. Its Schläfli symbol is {10/3}. [1] The name decagram combines a numeral prefix, deca-, with the Greek suffix -gram. The -gram suffix derives from γραμμῆς (grammēs) meaning ...
The previous one, the regular hexagram {6/2}, is a compound of two triangles. The smallest star polygon is the {5/2} pentagram. The next one is the {8/3} octagram and its related {8/2} star figure (a compound of two squares), followed by the regular enneagram, which also has two forms: {9/2} and {9/4}, as well as one compound of three triangles ...
Reverted to version as of 11:38, 3 May 2011: please do the change by hand to avoid cluttering this with inkscape's custom attributes. It's only 3 lines, should be pretty easy :) 20:25, 3 May 2011: 240 × 228 (2 KB) Fry1989: margins to fit: 11:38, 3 May 2011: 260 × 245 (166 bytes) Sarang: assimilated to Five_Pointed_Star_Lined.svg: 19:11, 27 ...