Sphere

A sphere is a surface analogous to the circle, a curve. In solid geometry, a sphere is the set of points that are all at the same distance r... Wikipedia

  • Type:  Smooth surface Algebraic surface
  • χ:  2
  • Symmetry group:  O(3)
  • Surface Area:  4πr 2
  • Volume:  πr 3
  • Data source:  DuckDuckGo