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Figures with the axes of symmetry drawn in. The figure with no axes is asymmetric.

Reflection symmetry, line symmetry, mirror symmetry, mirror-image symmetry, or (in biology) bilateral symmetry is symmetry with respect to reflection. That is, a figure which does not change upon undergoing a reflection has reflectional symmetry.

In 2D there is a line of symmetry, in 3D a plane of symmetry. An object or figure which is indistinguishable from its transformed image is called mirror symmetric.


Reflection symmetry sections
Intro  Symmetric geometrical shapes  Mathematical equivalents  Advanced types of reflection symmetry  In nature  In architecture  See also    References   Bibliography  External links  

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