A geometric figure has bilateral symmetry if reflection in a line or plane maps it to itself. Bilateral symmetry is therefore another name for mirror symmetry. For a planar graph embedding, bilateral symmetry means that reflection in some line maps the embedded graph to itself. An embedding specified by LCF notation is bilaterally symmetric when it satisfies this condition.
Bilateral Symmetry
See also
Mirror Symmetry, Reflection, SymmetryExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Bilateral Symmetry." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/BilateralSymmetry.html