Heptagram
Star polygon / From Wikipedia, the free encyclopedia
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"Elven star" redirects here. For the book by Margaret Weis and Tracy Hickman, see Elven Star.
A heptagram, septagram, septegram or septogram is a seven-point star drawn with seven straight strokes.
This article includes a list of general references, but it lacks sufficient corresponding inline citations. (April 2011) |
Quick Facts Regular heptagram (7/2), Type ...
Regular heptagram (7/2) | |
---|---|
Type | Regular star polygon |
Edges and vertices | 7 |
Schläfli symbol | {7/2} |
Coxeter–Dynkin diagrams | |
Symmetry group | Dihedral (D7) |
Internal angle (degrees) | ≈77.143° |
Properties | star, cyclic, equilateral, isogonal, isotoxal |
Dual polygon | self |
Close
Quick Facts Regular heptagram (7/3), Type ...
Regular heptagram (7/3) | |
---|---|
Type | Regular star polygon |
Edges and vertices | 7 |
Schläfli symbol | {7/3} |
Coxeter–Dynkin diagrams | |
Symmetry group | Dihedral (D7) |
Internal angle (degrees) | ≈25.714° |
Properties | star, cyclic, equilateral, isogonal, isotoxal |
Dual polygon | self |
Close
The name heptagram combines a numeral prefix, hepta-, with the Greek suffix -gram. The -gram suffix derives from γραμμῆ (grammē) meaning a line.[1]