The same pieces can be rearranged to form a square, by turning them around the three hinges that connect them.
Taken Wednesday, August 11, 2010, 08:53:10AM.
Original image size: 3888x2592, 2.4Mb
Technical details: Canon EOS 40D, 1/15s@ F5.6, ISO 1250, 17-85mm f/4-5.6 IS, 38mm (60mm equiv)
PS CS4 3600:20, Exp0.5 Sat10, USM 30:5