Michael Heizer (b. 1944) 40 Degrees, 90 Degrees, 180 Degrees, 1983 Lithograph, intaglio, screenprint, etching, and rubber stamping on wove paper 31-3/4 x 46-1/4 inches (80.6 x 117.5 cm) (sheet) Ed. 26/40 Signed, editioned, and dated in pencil lower right HID12401132022 © 2025 Heritage Auctions | All Rights Reserved www.HA.com/TexasAuctioneerLicenseNotice