“Giotto used the perfect circle to demonstrate the level of artistry he earned” http://theorbitbrown.com/site/the-perfect-circle/ http://theorbitbrown.com/site/

“Giotto used the perfect circle to demonstrate the level of artistry he earned” http://theorbitbrown.com/site/the-perfect-circle/ http://theorbitbrown.com/site/the-perfect-circle/ sometimes it is attributed to Michelangelo or Leonardo da Vinci