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cone
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A diagram of a double cone intersected by two green planes labeled PP (picture plane) and RP (reality plane), illustrating projected conic sections in projective geometry, with the apex and a point Omega marked. Diagram showing a double cone intersected by planes at different angles, producing the conic sections: a horizontal plane creates a circle, a tilted plane creates an ellipse, a plane parallel to the cone's side forms a parabola, and a steep plane produces a hyperbola. Each section is labeled, with the axis and apex of the cone indicated.
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cone: References & Edit History

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Article History

Type Description Contributor Date
Add new Web site: Australian Mathematical Sciences Institute - Cones, Pyradmids and Spheres. Dec 04, 2024
Added new Web site: icoachmath - Cone. Sep 23, 2007
Added new Web site: All Elementary Mathematics - Cone. Sep 23, 2007
Added new Web site: Enrich - Cone. Sep 23, 2007
Added new Web site: Wolfram Mathworld - Cone. Sep 23, 2007
Article added to new online database. Jul 20, 1998
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