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