Rhombidodecadodecahedron
The Uniform Polyhedron 
whose Dual Polyhedron is the Medial Deltoidal Hexecontahedron. It hasSchläfli Symbol r
and Wythoff Symbol
. Its faces are 
. The Circumradius for unit edge length is
References
Wenninger, M. J. Polyhedron Models. Cambridge, England: Cambridge University Press, pp. 116-117, 1989.
- Order (Ordinary Differential Equation)
- Order (Permutation)
- Order (Polynomial)
- Order Statistic
- Order (Vertex)
- Ordinal Number
- Ordinary Differential Equation
- Ordinary Differential Equation--First-Order
- Ordinary Differential Equation--First-Order Exact
- Ordinary Differential Equation Second-Order
- Ordinary Differential Equation--System with Constant Coefficients
- Ordinary Double Point
- Ordinary Line
- Ordinary Point
- Ordinate
- Ore Number
- Ore's Conjecture
- Ore's Theorem
- Orientable Surface
- Orientation (Plane Curve)
- Orientation-Preserving
- Orientation-Reversing
- Orientation (Vectors)
- Origami
- Origin