A sphere is indeed a three dimensional shape. It is a circle rotated about an axis several times to create and three dimmensional object from a two dimensional shape.
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It is a sphere
sphere
A cube is a three dimensional square, and a sphere is a three dimensional circle.
For it to be three dimensional, it would be a sphere.
Shapes, in three dimensions. eg. cubes, spheres, pyramids etc. heres an example of each: cube: a dice. sphere: a ball. pyramid: a pyramid. Two dimensional shapes are things like squares, circles and triangles.