A new study suggests that Leonardo da Vinci’s iconic Vitruvian Man may contain a hidden geometric pattern that links the famous Renaissance drawing to human anatomy and natural mathematics. The Triangle Leonardo Quietly Pointed OutCreated around 1490, the Vitruvian Man remains one of the most recognizable drawings ever produced. Mac Sweeney argues that it matches Bonwill’s Triangle, a geometric structure discovered in 1864 by American dentist William Bonwill while studying jaw mechanics. A Renaissance Drawing with a Surprisingly Modern RatioThe study’s central idea is that Leonardo’s triangle creates a specific mathematical relationship inside the drawing. Leonardo’s hidden triangle may generate the same tetrahedral pattern found in human anatomy, explaining the 1.64 ratio between the drawing’s square and circle.