Linked from

The 21 pages that link to Ellipse, each with the reason it gives.

• Kepler's laws of planetary motionBroader topic: The first law identifies this curve as the ideal planetary path.

• CircleCompared with: A circle is the special ellipse whose two foci coincide.

• Conic sectionBroader topic: An oblique plane cutting one nappe usually produces an ellipse.

• Orbital eccentricityBroader topic: Bound Keplerian orbits are ellipses, with eccentricity measuring their departure from circularity.

• DiameterCompared with: An ellipse has distinct major and minor axes rather than one constant diameter.

• ParabolaCompared with: An ellipse has eccentricity below one, whereas a parabola’s eccentricity is one.

• Semimajor axisNarrower topic: The semimajor axis is defined from an ellipse’s longest diameter.

• Apollonius of PergaBroader topic: Apollonius established the name and geometric treatment of this conic.

• PeriapsisRelated: Bound two-body orbits are ellipses, with the primary at one focus.

• Focus (geometry)Broader topic: Its two foci jointly determine the defining constant-sum condition.

• HyperbolaCompared with: Its focus definition uses a constant sum where a hyperbola uses a constant difference.

• Oblate spheroidNarrower topic: Rotating an ellipse around its shorter axis generates an oblate spheroid.

• Implicit differentiationBroader topic: Its defining equation can be differentiated directly to find tangent slopes.

• Planetary orbitNarrower topic: An ideal two-body planetary orbit traces this conic with the star at one focus.

• ConeBroader topic: A plane cuts one nappe of a cone in an ellipse when it is not parallel to a generator.

• Kepler's second lawRelated: Kepler's first law places the Sun at one focus of each planetary ellipse.

• St. Peter's SquareBroader topic: The piazza's oval plan organizes its colonnades around two focal points.

• Kepler's first lawNarrower topic: An ellipse is the geometric path specified by the law.

• Reuleaux triangleCompared with: Most ellipses lack constant width, showing that convexity alone does not ensure it.

• Four-vertex theoremBroader topic: A noncircular ellipse has exactly four curvature extrema.

• Marden's theoremNarrower topic: The Steiner inellipse is a particular ellipse, and its foci are the theorem's geometric output.