PIERO della FRANCESCA
Mural in fresco and tempera
Dimensions: 88.6 x 78.75 in (225 x 200 cm)
Pinacoteca Comunale, Sansepolcro
The yellow divisions are the Golden Ratio's of the height and width (.382 and .618). The reddish lines are 1/4 and 1/2 divisions and the 1/2 diagonals. The green and cyan are 1/3, 1/6, 1/9 divisions and the 1/3 diagonals. It's just a coincidence that a lot of stuff lines up?