Torus

                                                    
Creates a donut-shaped object by extruding a circle along a circular path.

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The Properties window of a torus contains a Torus page, in which you can set the geometric parameters. For TC Surface Options, see TC Surface Properties.
Local menu options:
Inner Radius: The base circle is the inner radius; the torus proceeds outward. Outer Radius: The base circle is the outer radius; the torus proceeds inward.