None.
And when you find a sphere which is not 3d I would like to know.
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A sphere has no edges or vertices but it does have a face which is its surface area and calulated by the formula: area = 4*pi*radius squared
A sphere is a 3D shape. Here are some sphere facts: * A sphere has one face which wraps around the whole of it's shape. * A sphere is the 3D equivalent of a circle. * A sphere has no vertices or edges. CK x
Sphere
sphere
There are lots of shapes: a sphere, an ellipsoid, a smoothed blob.