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List of planar symmetry groups
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List of planar symmetry groups : ウィキペディア英語版
List of planar symmetry groups
This article summarizes the classes of discrete symmetry groups of the Euclidean plane. The symmetry groups are named here by three naming schemes: International notation, orbifold notation, and Coxeter notation.
There are three kinds of symmetry groups of the plane:
*2 rosette groups – 2D point groups
*7 frieze groups – 2D line groups
*17 wallpaper groups – 2D space groups.
== Rosette groups ==
There are two families of discrete two-dimensional point groups, and they are specified with parameter ''n'', which is the order of the group of the rotations in the group.

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