Although based on simple geometries, the Irregular Polygons (1965-66) comprise one of the most complex artistic statements of Frank Stella’s career. Each of the eleven compositions combines varying numbers of shapes to create daringly irregular outlines. Stella made four versions of each composition, varying the color combinations. They mark a radical shift from Stella’s earlier striped works in their use of large fields of color. The asymmetric canvases play with illusion, confronting Stella’s previous emphasis on flatness while anticipating his career-long exploration of space and volume in both painting and sculpture.