Octagon (EntityTopic, 12)
From Hi.gher. Space
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== Equations == | == Equations == | ||
*The area of a regular octagon with side length ''l'' is: | *The area of a regular octagon with side length ''l'' is: | ||
| - | <blockquote>2(1 + √2) | + | <blockquote>2(1 + √2) {{DotHV}}</blockquote> |
== Dissection == | == Dissection == | ||
Revision as of 20:42, 22 November 2011
Equations
- The area of a regular octagon with side length l is:
2(1 + √2) · l2
Dissection
The octagon of side 1 may be dissected 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%)
- Octagonal prism (2×, 20%)
| Notable Dishapes | |
| Flat: | triangle • square • pentagon • hexagon • octagon • decagon |
| Curved: | circle |
