Arrangement
In general, an arrangement of objects is simply a grouping of them. The number of ``arrangements'' of 
items is given eitherby a Combination (order is ignored) or Permutation (order is significant).
The division of Space into cells by a collection of Hyperplanes is also called an arrangement.
See also Combination, Cutting, Hyperplane, Ordering, Permutation- Circle Radial Curve
- Circles-and-Squares Fractal
- Circle Squaring
- Circle Strophoid
- Circle Tangents
- Circuit
- Circuit Rank
- Circulant Determinant
- Circulant Graph
- Circulant Matrix
- Circular Cylindrical Coordinates
- Circular Functions
- Circular Permutation
- Circumcenter
- Circumcircle
- Circumference
- Circuminscribed
- Circumradius
- Circumscribed
- Circumsphere
- Cis
- Cissoid
- Cissoid of Diocles
- Cissoid of Diocles Caustic
- Cissoid of Diocles Inverse Curve