Vitruvian Man

Vitruvian Man - wikipedia.org
The Vitruvian Man is a world renowned drawing with accompanying notes created by Leonardo da Vinci around the year 1492 as recorded in one of his journals. It depicts a nude male figure in two superimposed positions with his arms and legs apart and simultaneously inscribed in a circle and square.
en.wikipedia.org/wiki/Vitruvian_man

Vitruvian Man
Leonardo da Vinci's drawing of Vitruvian Man is one of the most popular world icons. There have been countless attempts over the years to understand the composition of Leonardo's illustration of Vitruvius' principles, but so far, the only solutions provided have been unnecessarily complicated.
www.aiwaz.net/Leonardo/vitruvianman/

Leonardo's Vitruvian Man
This rendering of the Vitruvian Man, completed in 1490, is fundamentally different than others in two ways: The circle and square image overlaid on top of each other to form one image. A key adjustment was made that others had not done and thus were forced to make disproportionate appendages.
leonardodavinci.stanford.edu/submissions/clabaugh/history/leonardo.html