200808 - pmm
Copyright 2008 S.Monnier
|This image is part of a series of 17 images, displaying patterns with the symmetries of the 17 wallpaper groups.
This is the group pmm, which contains two types of reflection axes in perpendicular direction (here horizontal and vertical). In addition, there are four order two rotations, located at the intersections of the reflection axes. (The symmetry is slightly broken by the circular central part of the image...)