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The cross-section of a Solid is a Lamina obtained by its intersection with a Plane. The cross-section of an object therefore represents an infinitesimal ``slice'' of a solid, and may be different depending on the orientation of the slicing plane. While the cross-section of a Sphere is always a Disk, the cross-section of a Cube may be a Square, Hexagon, or other shape.

See also Axonometry, Cavalieri's Principle, Lamina, Plane, Projection, Radon Transform, Stereology

© 1996-9 Eric W. Weisstein