You can create a three-dimensional donut or ring-shaped entity known as a torus. The diameter of a ring is always parallel to the xy plane of the current UCS. A torus is constructed by revolving a circle about a line drawn in the plane of the circle and parallel to the z-axis of the current UCS. You position a torus by specifying its center point. You determine the size of a torus by specifying its overall diameter or radius and the diameter or radius of the tube (the circle being revolved).
Center (A) and radius of the whole torus (B), and the radius of the body (C).
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Creating three-dimensional entities
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