leonardo da vinci vitruvian man secrets dentist 2663052

A London-based dentist, Dr. Rory Mac Sweeney, has published a new analysis of Leonardo da Vinci's "Vitruvian Man" (c. 1490) in the Journal of Mathematics and Arts. Using his professional training, Sweeney identifies an equilateral triangle hidden between the figure's legs, which he links to "Bonwill's triangle," a 19th-century dental principle describing optimal jaw function. He argues that Leonardo intuitively encoded geometric relationships—including a tetrahedral ratio of approximately 1.64—that anticipate modern understanding of biological architecture.