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  1. Ellipse - Wikipedia

    In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of both distances to the two focal points is a constant. It generalizes a circle, which is …

  2. Ellipse - Equation, Formula, Properties, Graphing - Cuemath

    An ellipse is the locus of a point whose sum of distances from two fixed points is a constant. Its equation is of the form x^2/a^2 + y^2/b^2 = 1, where 'a' is the length of the semi-major axis and 'b' is the length …

  3. Ellipse | Definition, Properties & Equations | Britannica

    Ellipse, a closed curve, the intersection of a right circular cone (see cone) and a plane that is not parallel to the base, the axis, or an element of the cone.

  4. Ellipse - Math is Fun

    An ellipse usually looks like a squashed circle ... F is a focus, G is a focus, and together they are called foci. (pronounced fo-sigh)

  5. Ellipse – Definition, Parts, Equation, and Diagrams

    Aug 3, 2023 · An ellipse is a closed curved plane formed by a point moving so that the sum of its distance from the two fixed or focal points is always constant. It is formed around two focal points, …

  6. Ellipse -- from Wolfram MathWorld

    Dec 3, 2025 · The ellipse is a conic section and a Lissajous curve. An ellipse can be specified in the Wolfram Language using Circle [x, y, a, b]. If the endpoints of a segment are moved along two …

  7. ELLIPSE Definition & Meaning - Merriam-Webster

    A closed curve consisting of points whose distances from each of two fixed points (foci) all add up to the same value is an ellipse. The midpoint between the foci is the center.

  8. 8.1 The Ellipse - College Algebra 2e | OpenStax

    This free textbook is an OpenStax resource written to increase student access to high-quality, peer-reviewed learning materials.

  9. The Ellipse | Algebra and Trigonometry - Lumen Learning

    This section focuses on the four variations of the standard form of the equation for the ellipse. An ellipse is the set of all points (x, y) in a plane such that the sum of their distances from two fixed points is a …

  10. 12.2: The Ellipse - Mathematics LibreTexts

    Feb 19, 2024 · An ellipse is the set of all points (x, y) (x, y) in a plane such that the sum of their distances from two fixed points is a constant. Each fixed point is called a focus (plural: foci).