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  2. File:3d model of Sphere.stl - Wikipedia

    en.wikipedia.org/wiki/File:3d_model_of_Sphere.stl

    The uploader of this file has agreed to the Wikimedia Foundation 3D patent license: This file and any 3D objects depicted in the file are both my own work. I hereby grant to each user, maker, or distributor of the object depicted in the file a worldwide, royalty-free, fully-paid-up, nonexclusive, irrevocable and perpetual license at no additional cost under any patent or patent application I ...

  3. File:Sphere function in 3D.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Sphere_function_in_3D.pdf

    English: This PDF file contains a plot of the sphere function in 3D. This is a test function used in mathematical optimization. This is a test function used in mathematical optimization. x 2 + y 2 {\displaystyle x^{2}+y^{2}}

  4. UV mapping - Wikipedia

    en.wikipedia.org/wiki/UV_mapping

    UV mapping is the 3D modeling process of projecting a 3D model's surface to a 2D image for texture mapping. The letters "U" and "V" denote the axes of the 2D texture because "X", "Y", and "Z" are already used to denote the axes of the 3D object in model space, while "W" (in addition to XYZ) is used in calculating quaternion rotations, a common ...

  5. Sphere eversion - Wikipedia

    en.wikipedia.org/wiki/Sphere_eversion

    A Morin surface seen from "above" Sphere eversion process as described in [1] Paper sphere eversion and Morin surface Paper Morin surface (sphere eversion halfway) with hexagonal symmetry. In differential topology, sphere eversion is the process of turning a sphere inside out in a three-dimensional space (the word eversion means

  6. Regular icosahedron - Wikipedia

    en.wikipedia.org/wiki/Regular_icosahedron

    3D model of a regular icosahedron. The insphere of a convex polyhedron is a sphere inside the polyhedron, touching every face. The circumsphere of a convex polyhedron is a sphere that contains the polyhedron and touches every vertex. The midsphere of a convex polyhedron is a sphere tangent to every

  7. Truncated icosahedron - Wikipedia

    en.wikipedia.org/wiki/Truncated_icosahedron

    The surface area and the volume of the truncated icosahedron of edge length are: [2] = (+ +) = +. The sphericity of a polyhedron describes how closely a polyhedron resembles a sphere. It can be defined as the ratio of the surface area of a sphere with the same volume to the polyhedron's surface area, from which the value is between 0 and 1.

  8. Geodesic polyhedron - Wikipedia

    en.wikipedia.org/wiki/Geodesic_polyhedron

    Geodesic polyhedra are available as geometric primitives in the Blender 3D modeling software package, which calls them icospheres: they are an alternative to the UV sphere, having a more regular distribution. [4] [5] The Goldberg–Coxeter construction is an expansion of the concepts underlying geodesic polyhedra.

  9. 3-sphere - Wikipedia

    en.wikipedia.org/wiki/3-sphere

    Direct projection of 3-sphere into 3D space and covered with surface grid, showing structure as stack of 3D spheres (2-spheres) In mathematics, a hypersphere or 3-sphere is a 4-dimensional analogue of a sphere, and is the 3-dimensional n-sphere. In 4-dimensional Euclidean space, it is the set of points equidistant from a fixed central point.

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