Geometrical transformations are often thought of slides, turns, and reflections. Look at the picture below to see these moves.

Symmetry adds beauty and balance to natural forms and architectural design. The Wisconsin Model Academic Standards for Mathematics Glossary (http://dpi.wi.gov/standards/mathglos.html)of terms defines symmetry as follows. A figure has symmetry if it has parts that correspond with each other in terms of size, form, and arrangement.

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