which of the following correctly describes a sphere?
a a sphere is a vertex
b a sphere has a face
c a sphere has a center
d a sphere has an edge
c a sphere has a center
A sphere is a perfectly round geometrical object in three-dimensional space, such as the shape of a round ball. Unlike a polyhedron, which may have vertices, edges, and faces, a sphere has none of these features. A sphere has a center point, and every point on its surface is an equal distance from that center.