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 Related Terms
 Transformation:  The mapping, or movement, of all the points of a figure in a plane according to a common operation.
Rotation: A transformation that turns a figure about a fixed point at a given angle and a given direction.
Reflection: A transformation that "flips" a figure over a mirror or reflection line.
Translation: A transformation that "slides" each point of a figure the same distance in the same direction.
Dilation: A transformation that changes the size of an object, but not the shape.
Operation: A mathematical process that combines two or more numbers.
Plane: One of the basic undefined terms of geometry. A plane goes on forever in all directions (in two-dimensions) and is "flat" (i.e., it has no thickness).
Isometry: A transformation that keeps the size and shape of geometric figures the same.