Hexagram
| Regular hexagram | |
|---|---|
A regular hexagram | |
| Type | Regular polygonal figure |
| Edges and vertices | 6 |
| Schläfli symbol | a{6}, {6/2}, 2{3} or {{3}} |
| Coxeter–Dynkin diagrams | or |
| Symmetry group | Dihedral (D6) |
| Internal angle (degrees) | 60° |
| Properties | star, compound, cyclic, equilateral, isogonal, isotoxal |
| Dual polygon | self |
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| Star polygons |
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A hexagram (Greek) or sexagram (Latin) is a six-pointed geometric star figure with the Schläfli symbol {6/2}, 2{3}, or {{3}}. The term is used to refer to a compound figure of two equilateral triangles. The intersection is a regular hexagon.
The hexagram is part of an infinite series of shapes which are compounds of two n-dimensional simplices. In three dimensions, the analogous compound is the stellated octahedron, and in four dimensions the compound of two 5-cells is obtained.
It has been historically used in various religious and cultural contexts and as decorative motifs. The symbol was used as a decorative motif in medieval Christian churches and Jewish synagogues. In the medieval period, a Muslim mystical symbol known as the Seal of Solomon was depicted as either a hexagram or a pentagram.