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  1. Spherical geometry - Wikipedia

    Spherical geometry or spherics (from Ancient Greek σφαιρικά) is the geometry of the two- dimensional surface of a sphere [a] or the n-dimensional surface of higher dimensional spheres.

  2. Sphere | Geometry, Symmetry, Circumference | Britannica

    sphere, In geometry, the set of all points in three-dimensional space lying the same distance (the radius) from a given point (the centre), or the result of rotating a circle about one of its …

  3. Spherical Geometry | Brilliant Math & Science Wiki

    Spherical geometry is the study of geometric objects located on the surface of a sphere. Spherical geometry works similarly to Euclidean geometry in that there still exist points, lines, and angles.

  4. Sphere - Shape, Definition, Formulas, Properties, Examples

    A sphere is a three-dimensional shape or object that is round in shape. The distance from the center of the sphere to any point on its surface is its radius. Learn more about the definition, …

  5. Sphere: Definition, Formulas, Examples, Shapes, Properties

    Jul 23, 2025 · A sphere is a three-dimensional object that is perfectly round and symmetrical. It is defined as the set of all points in 3D space that are equidistant from a fixed point (the center).

  6. Sphere - Math is Fun

    Among all 3D shapes, the sphere encloses the most volume for the least surface area. Example: if you blow up a balloon it naturally forms a sphere because it is trying to hold as much air as …

  7. Although spherical geometry is not as old or as well known as Euclidean geometry, it is quite old and quite beautiful. The original motivation probably came from astronomy and navigation, …

  8. Ultimate Guide to Geometry of Spheres - numberanalytics.com

    May 16, 2025 · Explore sphere geometry in this guide, covering definitions, essential formulas for surface area and volume, and real-world applications.

  9. Spherical Geometry -- from Wolfram MathWorld

    6 days ago · In spherical geometry, straight lines are great circles, so any two lines meet in two points. There are also no parallel lines. The angle between two lines in spherical geometry is …

  10. Sphere - Math.net

    A sphere is a 3D geometric figure that has a round shape. All points on the surface of the sphere are an equal distance from its center. Below are some real-life examples of spheres. A …