CONICSECTION

Conic section

1. Parabola
2. Circle and ellipse
3. Hyperbola]]In mathematics, a conic section is a curve obtained as the intersection of a cone with a plane. In analytic geometry, a conic may be defined as a plane algebraic curve of degree 2. There are a number of other geometric definitions possible. One of the most useful, in that it involves only the plane, is that a conic consists of those points whose distances to some point, called a focus, and some line, called a directrix, are in a fixed ratio, called the eccentricity.

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conic section

Noun

  1. Any of the four distinct shapes that are the intersections of a cone with a plane, namely the circle, ellipse, parabola and hyperbola.


The above text is a snippet from Wiktionary: conic section
and as such is available under the Creative Commons Attribution/Share-Alike License.

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