# Katherine Seaton

This work comprises eleven biscornu, which roughly translates as "irregular". Each one is made from two offset squares and has the symmetry of a square antiprism. By embroidering each with a different hitomezashi (one-stitch sashiko) design, a complete three-dimensional symmetry sampler of the axial point group $D_{4d}$, and its ten subgroups, has been created. The whole group is depicted using a fractal (a Fibonacci snowflake), the trivial subgroup design is aleatoric, and traditional motifs with rotational and reflection symmetries have been combined to decorate the other nine biscornu.