Architect Preston Scott Cohen combines the use of the most advanced digital modelling technologies with a fascination for 17th-century descriptive geometry. He uses familiar forms distorted by oblique projections and similar devices to create complex designs that challenge our preconceptions about the nature of order in architecture. "Contested Symetries" features Cohen's intricate geometric symmetries and lucidly describes both the mechanics and the theory behind their application. A wealth of projects, including the widely acclaimed Torus House, are represented through drawings, models and computer-generated images.