transformation
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Two figures are congruent to one another when they both have the exact same shape and size. This means that every side on figure A will have a matching side on figure B that is the same size and that every angle on figure A will have a matching angle on figure B. The two figures will have the same size and shape, but may be in a different position (for example, one might be flipped horizontally or vertically).
Congruent figure(s) (shapes) are two figures that have the same size AND shape.
true
An isometry is a transformation in which the original figure and its image are congruent. Shape remains constant as size increases.