# Heptagram

Regular heptagram
Regular {7/2} heptagram
Edges and vertices7
Schläfli symbol{7/2}, {7/3}
Coxeter diagram,
Symmetry groupDihedral (D7)
Propertiesstar, cyclic, equilateral, isogonal, isotoxal

Regular heptagram
Regular {7/2} heptagram
Edges and vertices7
Schläfli symbol{7/2}, {7/3}
Coxeter diagram,
Symmetry groupDihedral (D7)
Propertiesstar, cyclic, equilateral, isogonal, isotoxal

A heptagram, septagram, or septegram is a seven-pointed star drawn with seven straight strokes.

## Geometry

In general, a heptagram is any self-intersecting heptagon (7-sided polygon).

There are two regular heptagrams, labeled as {7/2} and {7/3}, with the second number representing the vertex interval step from a regular heptagram, {7/1}.

This is the smallest star polygon that can be drawn in two forms, as irreducible fractions. The two heptagrams are sometimes called the heptagram (for {7/2}) and the great heptagram (for {7/3}).

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, followed by the regular enneagram, which also has two forms: {9/2} and {9/4}, as well as one compound of 3 triangles {9/3}.

 First heptagram {7/2} Second heptagram {7/3} Both heptagrams inscribed within a heptagon Heptagrammic prism (7/2) Heptagrammic prism (7/3)

## In culture

### Religious and occult symbolism

• The heptagram was used in Christianity to symbolize the seven days of creation and became a traditional symbol for warding off evil.
• The heptagram is a symbol of perfection (or God) in many Christian religions.
• The heptagram is used in the symbol for Babalon in Thelema.
• The heptagram is known among neopagans as the Elven Star or Fairy Star. It is treated as a sacred symbol in various modern pagan and witchcraft traditions. Blue Star Wicca also uses the symbol, where it is referred to as a septegram. The second heptagram is a symbol of magical power in some pagan religions.
• The second heptagram is a sign for otherkin subculture.
• In alchemy, a seven-sided star can refer to the seven planets which were known to ancient alchemists.
• In George R. R. Martin's A Song of Ice and Fire series, the dominant religion of Westeros follows The Seven, whose symbol is described as a seven-pointed star.