Circles, Arcs from Opposite Corners and Opposite Sides

Sol LeWitt (1928-2007) Circles, Arcs from Opposite Corners and Opposite Sides signed, titled and dated 'Circles, Arcs from opposite corners and opposite sides S. LeWitt Dec. 6 1971' (on the reverse) ink and graphite on paper 9 x 9 in. (22.9 x 22.9 cm.) Executed in 1971.