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| | Symmetry Encyclopedia @ KilnFired.com (Kiln Fired) (Site not responding. Last check: 2007-10-11) |
 | | Symmetry is a characteristic feature of systems, geometrical shapes, equations, and other objects; we say that such an object is symmetric with respect to a given operation if this operation, when applied to the object, does not change it. |
 | | Considering points equivalent which, due to the symmetry, have the same properties, the equivalence classes are the orbits of the group action on the space itself. |
 | | Symmetry is used in the design of the overall floor plan of buildings as well as the design of individual building elements such as doors, windows, floors, frieze work, and ornamentation; many facades adhere to bilateral symmetry. |
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