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- Conic_section abstract "In mathematics, a conic section (or just conic) is a curve obtained as the intersection of a cone (more precisely, a right circular conical surface) 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.Traditionally, the three types of conic section are the hyperbola, the parabola, and the ellipse. The circle is a special case of the ellipse, and is of sufficient interest in its own right that it is sometimes called the fourth type of conic section. The type of a conic corresponds to its eccentricity, those with eccentricity less than 1 being ellipses, those with eccentricity equal to 1 being parabolas, and those with eccentricity greater than 1 being hyperbolas. In the focus-directrix definition of a conic the circle is a limiting case with eccentricity 0. In modern geometry certain degenerate cases, such as the union of two lines, are included as conics as well.The conic sections were named and studied at least since 200 BC, when Apollonius of Perga undertook a systematic study of their properties.".
- Conic_section thumbnail Conic_sections_with_plane.svg?width=300.
- Conic_section wikiPageExternalLink jbconics.htm.
- Conic_section wikiPageExternalLink ConicFitMod.html.
- Conic_section wikiPageExternalLink JavaGSPLinks.htm.
- Conic_section wikiPageExternalLink eightpointconic.html.
- Conic_section wikiPageExternalLink 1.
- Conic_section wikiPageExternalLink ?pa=content&sa=viewDocument&nodeId=196&bodyId=60.
- Conic_section wikiPageExternalLink www.cut-the-knot.org.
- Conic_section wikiPageExternalLink conics.shtml.
- Conic_section wikiPageExternalLink conics04b.html.
- Conic_section wikiPageExternalLink index.asp.
- Conic_section wikiPageExternalLink 19631.
- Conic_section wikiPageExternalLink more.html.
- Conic_section wikiPageExternalLink conicSections.html.
- Conic_section wikiPageExternalLink specialPlaneCurves.html.
- Conic_section wikiPageID "19008673".
- Conic_section wikiPageRevisionID "605794935".
- Conic_section hasPhotoCollection Conic_section.
- Conic_section title "Conic Section".
- Conic_section urlname "ConicSection".
- Conic_section subject Category:Algebraic_curves.
- Conic_section subject Category:Analytic_geometry.
- Conic_section subject Category:Birational_geometry.
- Conic_section subject Category:Conic_sections.
- Conic_section subject Category:Euclidean_solid_geometry.
- Conic_section comment "In mathematics, a conic section (or just conic) is a curve obtained as the intersection of a cone (more precisely, a right circular conical surface) 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.".
- Conic_section label "Conic section".
- Conic_section label "Conique".
- Conic_section label "Cónica".
- Conic_section label "Kegelschnitt".
- Conic_section label "Kegelsnede".
- Conic_section label "Krzywa stożkowa".
- Conic_section label "Sección cónica".
- Conic_section label "Sezione conica".
- Conic_section label "Коническое сечение".
- Conic_section label "قطع مخروطي".
- Conic_section label "円錐曲線".
- Conic_section label "圆锥曲线".
- Conic_section sameAs Kuželosečka.
- Conic_section sameAs Kegelschnitt.
- Conic_section sameAs Κωνική_τομή.
- Conic_section sameAs Sección_cónica.
- Conic_section sameAs Konika.
- Conic_section sameAs Conique.
- Conic_section sameAs Irisan_kerucut.
- Conic_section sameAs Sezione_conica.
- Conic_section sameAs 円錐曲線.
- Conic_section sameAs 원뿔_곡선.
- Conic_section sameAs Kegelsnede.
- Conic_section sameAs Krzywa_stożkowa.
- Conic_section sameAs Cónica.
- Conic_section sameAs m.01mc3.
- Conic_section sameAs Q124255.
- Conic_section sameAs Q124255.
- Conic_section wasDerivedFrom Conic_section?oldid=605794935.
- Conic_section depiction Conic_sections_with_plane.svg.
- Conic_section isPrimaryTopicOf Conic_section.
