Pentagonal Rotunda
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Half of an Icosidodecahedron, denoted 
. It has 10 triangular and five pentagonal faces separating aPentagonal ceiling and a Dodecahedral floor. It is Johnson Solid
, and the only true Rotunda.
- Parabolic Coordinates
- Parabolic Cyclide
- Parabolic Cylinder
- Parabolic Cylinder Function
- Parabolic Cylindrical Coordinates
- Parabolic Fixed Point
- Parabolic Geometry
- Parabolic Horn Cyclide
- Parabolic Partial Differential Equation
- Parabolic Point
- Parabolic Ring Cyclide
- Parabolic Rotation
- Parabolic Segment
- Parabolic Spindle Cyclide
- Parabolic Spiral
- Parabolic Umbilic Catastrophe
- Paraboloid
- Paraboloidal Coordinates
- Paraboloid Geodesic
- Paracompact Space
- Paracycle
- Paradox
- Paradromic Rings
- Paragyrate Diminished Rhombicosidodecahedron
- Parallel