The Mathematicall Praeface to the Elements of Geometrie of Euclid of Megara is a book written by Dr. John Dee. It is a preface to the famous work of Euclid of Megara, the Elements of Geometrie. The book was first published in 1570 and is considered to be one of the most important works in the field of mathematics. The book provides an introduction to the study of geometry, including the basic principles and concepts of Euclid's Elements. It also includes a discussion of the history of geometry and the contributions of ancient mathematicians such as Pythagoras, Archimedes, and Apollonius. Dr. John Dee was a renowned mathematician, astronomer, and astrologer who lived in the 16th century. He was a scholar and advisor to Queen Elizabeth I of England and was known for his work in the fields of mathematics, astronomy, and navigation. Overall, The Mathematicall Praeface to the Elements of Geometrie of Euclid of Megara is a valuable resource for anyone interested in the history and principles of geometry, as well as the work of Dr. John Dee and his contributions to the field of mathematics.1570. Dee's occult philosophy of mathematics.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.