Fermat Conic
A Plane Curve of the form 
. For 
, the curve is a generalized Parabola; for 
it is a generalizedHyperbola.
- Cross-Correlation Theorem
- Cross Curve
- Crossed Ladders Problem
- Crossed Trough
- Cross Fractal
- Crossing Number (Graph)
- Crossing Number (Link)
- Cross of Lorraine
- Cross Polytope
- Cross Product
- Cross-Ratio
- Cross-Section
- Crout's Method
- Crowd
- Crown
- Crucial Point
- Cruciform
- Crunode
- Cryptarithm
- Cryptarithmetic
- Cryptography
- Crystallography Restriction
- Csch
- Császár Polyhedron
- C-Table