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![Solid model of a jack inside a cube](http://upload.wikimedia.org/wikipedia/commons/0/0f/Jack-in-cube_solid_model%2C_light_background.gif)
Credit: Greg L
A 3-D solid model of a jack inside a cube. Solid modeling is a set of principles for creating three-dimensional shapes that, when combined with geometric modeling, form the foundation of computer-aided design and in general support the creation, exchange, visualization, animation, interrogation, and annotation of digital models of physical objects.