“Protractor, Variation I” by Frank Stella is an acrylic and graphite painting on canvas at the Pérez Art Museum Miami. Created in 1969, the painting is 16 feet wide by 8 feet tall, and is composed of rhythmic bands of color in the shape of a protractor. This work is one of nearly 100 paintings in Stella’s Protractor series. Discover more reasons why this is a masterpiece with Franklin Sirmans, Director of the Pérez Art Museum Miami.