Ellipse/Related Articles

See also changes related to Ellipse, or pages that link to Ellipse or to this page or whose text contains "Ellipse".

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Parent topics

• Conic [r]: A curve obtained as the intersection of a plane with a circular cone; also called second order curve because of its algebraic representation. ^[e]
• Second order curve [r]: A planar curve defined by a quadratic equation: ax² + bxy + cy² + dx + ey + f = 0 in the affine plane, or $\sum _{i,j=0}^{2}a_{ij}x_{i}x_{j}=0$  in the projective plane; also called a conic because of its geometrical generation. ^[e]

Subtopics

• Circle (geometry) [r]: Add brief definition or description

Other related topics

• Parabola [r]: The planar curve formed by the points that lie as far from a given line (the directrix) as from a given point (the focus). ^[e]
• Hyperbola [r]: Planar curve formed by the points for which the difference of the distances to two given points is a given number. ^[e]

• Cone (geometry) [r]: Add brief definition or description

• Second order surface [r]: Add brief definition or description

• Kepler's laws [r]: Three mathematical laws were discovered by German mathematician and astronomer Johannes Kepler (1571–1630), and used by him to describe the motion of planets in the Solar System, and the motion of any two bodies orbiting each other. ^[e]