Directrix (Conic Section)
The Line which, together with the point known as the Focus, serves to define a Conic Section.
See also Conic Section, Ellipse, Focus, Hyperbola, Parabola
References
Coxeter, H. S. M. Introduction to Geometry, 2nd ed. New York: Wiley, pp. 115-116, 1969. Coxeter, H. S. M. and Greitzer, S. L. Geometry Revisited. Washington, DC: Math. Assoc. Amer., pp. 141-144, 1967.
- Meridian
- Meromorphic
- Mersenne Number
- Mersenne Prime
- Mertens Conjecture
- Mertens Constant
- Mertens Function
- Mertens Theorem
- Mertz Apodization Function
- Mesh Size
- Mesokurtic
- M-Estimate
- Metabiaugmented Dodecahedron
- Metabiaugmented Hexagonal Prism
- Metabiaugmented Truncated Dodecahedron
- Metabidiminished Icosahedron
- Metabidiminished Rhombicosidodecahedron
- Metabigyrate Rhombicosidodecahedron
- Metadrome
- Metagyrate Diminished Rhombicosidodecahedron
- Metalogic
- Metamathematics
- Method
- Metric
- Metric Entropy