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 Everyday Examples
 Symmetry:  The property of a figure or expression that allows for parts of it to be interchanged without forcing a change in the whole
This butterfly was created using the technique known as origami. The two sides of the butterfly are symmetric. If you fold the butterfly in half along the vertical center, the two sides of the butterfly match perfectly.

Butterfly

Photo courtesy of Nippon Origami Association. Click here to see more interesting origami shapes.