Mona Lisa's face is perfect in the report due to the width of your forehead on the length of the top of the head to the chin. This is illustrated by the "golden rectangles" that da Vinci used to promote the integration of mathematics in art. When a "golden rectangle", whose base extends from the right wrist in his left elbow, is set to reach the top of the head, even, is said to be a "perfect rectangle. This" golden rectangle "can be subdivided into smaller "golden rectangles" and can be removed to produce the golden spiral. All edges of the new rectangles axes Mona Lisa chin, eyes meet, nose and inverted corner of his mouth . Moreover, the general shape of the woman is purposely designed as a triangle, with the base arm and head as the tip. The aim is to draw attention to the face of the woman in the portrait.
The Last Supper is also built very mathematical. The ratio of the overall image is 12:6:4:3, where all space units = 12, on the back wall and windows = 4 = 3 units.