Vitruvian Man
The drawing represents ideal human body proportions. Its inscription in a square and a circle comes from a description by the ancient Roman architect Vitruvius in Book III of his treatise De architectura. Yet, as it has been demonstrated, Leonardo did not represent Vitruvius's proportions of the limbs but rather included those he found himself after measuring male models in Milan. While the drawing is named after Vitruvius, some scholars today question the appropriateness of such a title.
Vitruvian Man-2