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  2. List of curves - Wikipedia

    en.wikipedia.org/wiki/List_of_curves

    Download QR code; Print/export Download as PDF; Printable version; In other projects ... Plane curves of degree 2 are known as conics or conic sections and include ...

  3. Category:Conic sections - Wikipedia

    en.wikipedia.org/wiki/Category:Conic_sections

    Download as PDF; Printable version; ... Pages in category "Conic sections" ... Tangent half-angle formula; U. Unit hyperbola;

  4. Conic section - Wikipedia

    en.wikipedia.org/wiki/Conic_section

    A conic is the curve obtained as the intersection of a plane, called the cutting plane, with the surface of a double cone (a cone with two nappes).It is usually assumed that the cone is a right circular cone for the purpose of easy description, but this is not required; any double cone with some circular cross-section will suffice.

  5. Conic constant - Wikipedia

    en.wikipedia.org/wiki/Conic_constant

    In geometry, the conic constant (or Schwarzschild constant, [1] after Karl Schwarzschild) is a quantity describing conic sections, and is represented by the letter K. The constant is given by K = − e 2 , {\displaystyle K=-e^{2},} where e is the eccentricity of the conic section.

  6. Focus (geometry) - Wikipedia

    en.wikipedia.org/wiki/Focus_(geometry)

    A conic is defined as the locus of points for each of which the distance to the focus divided by the distance to the directrix is a fixed positive constant, called the eccentricity e. If 0 < e < 1 the conic is an ellipse, if e = 1 the conic is a parabola, and if e > 1 the conic is a hyperbola.

  7. Quadric - Wikipedia

    en.wikipedia.org/wiki/Quadric

    In mathematics, a quadric or quadric surface (quadric hypersurface in higher dimensions), is a generalization of conic sections (ellipses, parabolas, and hyperbolas).It is a hypersurface (of dimension D) in a (D + 1)-dimensional space, and it is defined as the zero set of an irreducible polynomial of degree two in D + 1 variables; for example, D = 1 in the case of conic sections.

  8. Circumconic and inconic - Wikipedia

    en.wikipedia.org/wiki/Circumconic_and_inconic

    In Euclidean geometry, a circumconic is a conic section that passes through the three vertices of a triangle, [1] and an inconic is a conic section inscribed in the sides, possibly extended, of a triangle. [2] Suppose A, B, C are distinct non-collinear points, and let ABC denote the triangle whose vertices are A, B, C.

  9. Orbital mechanics - Wikipedia

    en.wikipedia.org/wiki/Orbital_mechanics

    Download as PDF; Printable version; ... then the denominator of the equation of free orbits varies ... and substituting the result in the conic section curve formula ...