- Membership
- Publications
- Meetings
- Competitions
- Community
- Programs
- Students
- High School Teachers
- Faculty and Departments
- Underrepresented Groups
- MAA Awards
- MAA Grants
- News
- About MAA

This is the Tree of Proportions and Proportionality from the De Divina Proportione of Luca Pacioli (1445 - 1509), published in 1509. (Convergence has published Leonardo's woodcuts, taken from this book.) Some of the terms in Pacioli's tree are familiar today; some are taken originally from the study of proportions by Nicomachus in his Arithmetic; but the meaning of some other terms are not generally known. It would be a worthwhile project to go through the tree and decipher the meanings of all of the terms in it.

One image from the book of a stellated dodecahedron.
Frank J. Swetz and Victor J. Katz, "Mathematical Treasures - De Divina Proportione, by Luca Pacioli," Loci (January 2011)
Mathematical Association of America
P: (800) 331-1622
F: (301) 206-9789
E: maaservice@maa.org
Copyright © 2013
