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  2. Conical spiral - Wikipedia

    en.wikipedia.org/wiki/Conical_spiral

    Conical spiral with an archimedean spiral as floor projection Floor projection: Fermat's spiral Floor projection: logarithmic spiral Floor projection: hyperbolic spiral. In mathematics, a conical spiral, also known as a conical helix, [1] is a space curve on a right circular cone, whose floor projection is a plane spiral.

  3. Conical surface - Wikipedia

    en.wikipedia.org/wiki/Conical_surface

    More generally, when the directrix is an ellipse, or any conic section, and the apex is an arbitrary point not on the plane of , one obtains an elliptic cone [4] (also called a conical quadric or quadratic cone), [5] which is a special case of a quadric surface. [4] [5]

  4. Template:Calculator ifenabled - Wikipedia

    en.wikipedia.org/wiki/Template:Calculator_ifenabled

    Template parameters [Edit template data] Parameter Description Type Status; enabled: enabled 1: ... (for example during print) Example Calculator is not supported ...

  5. Conical coordinates - Wikipedia

    en.wikipedia.org/wiki/Conical_coordinates

    Coordinate surfaces of the conical coordinates. The constants b and c were chosen as 1 and 2, respectively. The red sphere represents r = 2, the blue elliptic cone aligned with the vertical z-axis represents μ=cosh(1) and the yellow elliptic cone aligned with the (green) x-axis corresponds to ν 2 = 2/3.

  6. List of mathematical shapes - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical_shapes

    Printable version; In other projects Wikidata item; Appearance. move to sidebar hide. Following is a list of shapes ... Cone; Ellipsoid; Hyperboloid of one sheet;

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  8. Solid angle - Wikipedia

    en.wikipedia.org/wiki/Solid_angle

    The external surface area A of the cap equals r2 only if solid angle of the cone is exactly 1 steradian. Hence, in this figure θ = A/2 and r = 1. The solid angle of a cone with its apex at the apex of the solid angle, and with apex angle 2 θ, is the area of a spherical cap on a unit sphere

  9. Cone - Wikipedia

    en.wikipedia.org/wiki/Cone

    Contrasted with right cones are oblique cones, in which the axis passes through the centre of the base non-perpendicularly. [3] Air traffic control tower in the shape of a cone, Sharjah Airport. A cone with a polygonal base is called a pyramid. Depending on the context, "cone" may also mean specifically a convex cone or a projective cone.