The Vitruvian Man. This is the famous artwork done by Leonardo da Vinci with the perfectly propotional man who is able to fit in a circle and a square.

The Vitruvian Man is one of the many famous pieces of artwork that Leonardo da Vinci drew. This picture, drawn in pen and ink is a man that is made up of perfect proportions. The picture is a man who fits into a circle and a square by moving the positions of his arms and legs. The reason the artwork is named "The Vitruvian Man" is because there was a man named Vitruvius in ancient …

…the Vitruvian Man is the perfectly proportional man that Leonardo da Vinci drew. He may not have intended to draw a man that would fit in a circle and a square perfectly but that is just the way that nature works out. Once you have the perfectly proportional man you can design and build anything that you can conceive because there is nothing more stable than the circle and the square in an architectural sense.