• Pacioli was a mathematician who wrote the book ' De Divina Proportione ' ( Divine Proportion ). The text discusses the idea of perspective as well as architectures use of mathematics . It also discusses what the ancient Greeks considered to be yhe five perfect solids . The Friar was a friend of many of the artist of the time . One of those was Leonardo Da Vinci . Having trained as a painteri Da Vinci worked with Pacioli to illustrate the book . Leonardo Da Vinci supplied around sixty drawings for the book . Some of these included geometric shapes to illustrate mathematical concepts .
• Having studied with Pacioli , Da Vinci made use of the idea of the golden ratio in some of his paintings and drawings . Its use appears in works such as the Last Supper and the Mona Lisa .