Confirm Reflective Symmetry --- Totally Tessellated @ http://library.advanced.org/16661/
Instructions: Print two copies of page (preferably on lightweight or tracing paper) and then close this window. Line up the two pages. Then, keeping the bottom page steady, fold the top page along the dotted line shown below. The bottom page should be uncovered, and the overall pattern (including the top page which should be showing through slightly) is a continuation of the tessellation. Thus, the tessellation has reflective symmetry.
