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.
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Every sphere is 3D. It's said to be "spherical" in shape.
a sphere
sphere
the 3d shape that that has no flat face is the circle
By definition a sphere is 3D. If it were only 2D it would be a circle.