Handedness
Objects which are identical except for a mirror reflection are said to display handedness and to be chiral.
See also
Amphichiral, Chiral, Enantiomer, Mirror ImageExplore with Wolfram|Alpha
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Cite this as:
Weisstein, Eric W. "Handedness." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/Handedness.html