An octagon is a 2-dimensional polygon with eight edges. The Bowers acronym for an octagon is oc.
Symbols[]
Symbols for the octagon include:
- x8o (regular)
- x4x (ditetragon)
- ko4ok&#zx (tetrambus)
- xwwx&#zx (edge first)
- xw wx&#zx (rectangle symmetry)
Structure and Sections[]
The regular octagon has each angle at 135 degrees. It can be seen as a truncated square.
Hypervolumes[]
Subfacets[]
- 8 points (0D)
- 8 line segments (1D)
- 1 octagon (2D)
Radii[]
- Vertex radius:
- edge radius;
Angles[]
- Vertex angle: 135º
Vertex coordinates[]
The coordinates of a regular octagon are all permutations and sign changes of (1,1+√2).
Related shapes[]
- Dual: Self-dual
- Vertex figure and short diagonal: Line segment, length
- Medium diagonal: Length
- Long diagonal: Length
See Also[]
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Zerogon | Monogon | Digon | Triangle | Square | Pentagon | Pentagram | Hexagon | Heptagon | Heptagram | Great heptagram | Octagon | Octagram | Enneagon | Enneagram | Great enneagram | Decagon | Decagram | Hendecagon | Small hendecagram | Hendecagram | Great hendecagram | Grand hendecagram | Dodecagon | Dodecagram | Tridecagon | Small tridecagram | Tridecagram | Medial tridecagram | Great tridecagram | Grand tridecagram | Tetradecagon | Tetradecagram | Great tetradecagram | Pentadecagon | Small pentadecagram | Pentadecagram | Great pentadecagram | Hexadecagon | Small hexadecagram | Hexadecagram | Great hexadecagram | Heptadecagon | Tiny heptadecagram | Small heptadecagram | Heptadecagram | Medial heptadecagram | Great heptadecagram | Giant heptadecagram | Grand heptadecagram | ... | Apeirogon | Failed star polygon (-gon) | Pseudogon (-gon) |
Regular |
Rectified |
Truncated |
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Octagon | Octagon | Hexadecagon |
Regular |
Rectified |
Truncated |
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Square | Square | Octagon |
Regular |
Rectified |
Truncated |
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Octagon | Octagon | Great hexadecagram |