SYMMETRY

[noun] [U] - the quality of having parts that match each other, esp. in a way that is attractive, or similarity of shape or contentsThe design of the house had a pleasing symmetry, its oblong shape being picked up in its elongated windows.The symmetry between the graph for recorded burglaries and the graph of unemployment is too striking to be coincidental.Compare asymmetry at asymmetric.(specialized) In mathematics, symmetry is the quality of having two parts that match exactly, either as if one half is a reflection of the other in a mirror, or when one part can take the place of another if it is rotated through 90° or 180°.