Let L denote the center line of the strip. The fundamental region is the region lying within the thin black lines. Horizontal dashed lines are horizontal mirrors. Thin, vertical, blue lines are vertical mirrors. Thick, horizontal, blue lines located at the top of the fundamental region are translation vectors.
Points are rotation centers.
Ideally, these snakes would be uncoiled and lying in a nice straight line. But, since snakes seem to cooperate as they please, the following pictures will have to do. Having now gained some experience looking at snakes and viewing the strip symmetries of their coloring, we provide a link to some images of which you may determine the symmetries on your own. We suggest that after viewing the snake the user attempt to create a fundamental region similar to those linked to above and then use the various transformations of the pattern in order to create the entire strip. Click here to access some more snake pictures .