200808 - pm
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 pm, which contains parallel reflection axes, in addition to the translations. The reflection axes are vertical and pretty obvious in the pattern above. There are two of them up to translations. (The symmetry is slightly broken by the circular central part of the image...)