Director Curve
The curve 
in the Ruled Surface parameterization
See also Directrix (Ruled Surface), Ruled Surface, Ruling
References
Gray, A. Modern Differential Geometry of Curves and Surfaces. Boca Raton, FL: CRC Press, p. 333, 1993.
- Carnot's Theorem
- Carotid-Kundalini Fractal
- Carotid-Kundalini Function
- Carry
- Carrying Capacity
- Cartan Matrix
- Cartan Relation
- Cartan Subgroup
- Cartan Torsion Coefficient
- Cartesian Coordinates
- Cartesian Ovals
- Cartesian Product
- Cartesian Trident
- Cartography
- Cascade
- Casey's Theorem
- Casimir Operator
- Cassini Ellipses
- Cassini Ovals
- Cassini Projection
- Cassini's Identity
- Cassini Surface
- Castillon's Problem
- Casting Out Nines
- Catacaustic