Difference between revisions of "Cube (geometry)"
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* A [[circumscribe]]d [[sphere]] of [[radius]] <math>\frac{s\sqrt{3}}{2}</math> | * A [[circumscribe]]d [[sphere]] of [[radius]] <math>\frac{s\sqrt{3}}{2}</math> | ||
* An [[inscribe]]d sphere of radius <math>\frac{s}{2}</math> | * An [[inscribe]]d sphere of radius <math>\frac{s}{2}</math> | ||
| − | * A sphere tangent to all of its edges of radius <math>\frac{s\sqrt{2}}{2}</math> | + | * A sphere [[tangent]] to all of its edges of radius <math>\frac{s\sqrt{2}}{2}</math> |
==See also== | ==See also== | ||
Revision as of 21:07, 8 September 2007
A cube, or regular hexahedron, is a solid composed of six square faces. A cube is dual to the regular octahedron and has octahedral symmetry. A cube is a Platonic solid.
Formulas
For a cube with edge-length 
has:
- Four space diagonals of length
- Surface area
- Volume
- A circumscribed sphere of radius
- An inscribed sphere of radius
- A sphere tangent to all of its edges of radius
See also
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