Vitruvian Man is a famous drawing done in ink that brings together the art of anatomy and mathematics. The artist Leonardo da Vinci made this based on the writings of Vitruvius, a Roman architect, author and engineer. His works described the exact measurements and proportions of the human body, which was applied to da Vinci's art. Two images of a man standing in a square and a circle are superimposed. The geometry of the art has every part of the body measured, with notes alongside from Vitruvius' work. This demonstrates his close attention to proportion and the blend between art and science. Image source: Wikimedia commons, Vitruvian Man. Listed as public domain in the United States because it is a photographic reproduction of a public domain work of art.