KnowraUnit sphereLinked fromLinked fromThe 7 pages that link to Unit sphere, each with the reason it gives.All 7Broader topic 1Related 4Narrower topic 1Compared with 1Solid angleRelated: Its surface area provides the defining measure for a solid angle.Spherical law of cosinesRelated: On a unit sphere, arc lengths and central angles have the same numerical value.Spherical coordinate systemRelated: The two angular coordinates specify a point on this sphere.Riesz's lemmaRelated: Rescaling the constructed vector places it on the unit sphere without losing the desired estimate.