Octagon (EntityTopic, 12)
From Hi.gher. Space
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| - | {{Shape | + | {{STS Shape |
| - | + | ||
| name=Octagon | | name=Octagon | ||
| dim=2 | | dim=2 | ||
| elements=8, 8 | | elements=8, 8 | ||
| genus=0 | | genus=0 | ||
| - | |||
| ssc=G8 | | ssc=G8 | ||
| pv_circle=<sup>2√2</sup>⁄<sub>π</sub> ≈ 0.9003 | | pv_circle=<sup>2√2</sup>⁄<sub>π</sub> ≈ 0.9003 | ||
| pv_square=2(√2-1) ≈ 0.8284 | | pv_square=2(√2-1) ≈ 0.8284 | ||
| + | | extra={{STS Rotope | ||
| + | | attrib=none | ||
| + | }}{{STS Uniform polytope | ||
| + | | wythoff=<nowiki>3 | 2 3 or | 2 2 2</nowiki> | ||
| schlaefli={8} | | schlaefli={8} | ||
| vfigure=[[Line segment|Line]], length 1 | | vfigure=[[Line segment|Line]], length 1 | ||
| dual=''Self-dual'' | | dual=''Self-dual'' | ||
| - | }} | + | }}}} |
== Segmentation == | == Segmentation == | ||
Revision as of 14:13, 14 March 2008
Segmentation
The octagon of side 1 may be segmented into 8× isosceles triangle with sides {1,2×√(1+√2⁄2)}.
Use
Octagonal faces are found in these trishapes on FGwiki:
- Cubic truncate (6×, 63%)
| Notable Dishapes | |
| Flat: | triangle • square • pentagon • hexagon • octagon • decagon |
| Curved: | circle |
