Meditation on Theorem of Pythagorus, from QED
1974 · Chine collé and aquatint on ivory wove paper
Chine: 34.9 × 26.9 cm (13 3/4 × 10 5/8 in.); Left plate: 35 × 27.4 cm (13 13/16 × 10 13/16 in.); Right plate: 35.1 × 27.5 cm (13 7/8 × 10 7/8 in.); Sheet: 68.2 × 95.4 cm (26 7/8 × 37 9/16 in.)
Art Institute of Chicago