Euclid 1-6 is a book that presents the enunciations of the propositions and corollaries of Euclid's Elements, a mathematical treatise on geometry and number theory. This edition, published in 1873, includes questions on the definitions, postulates, axioms, and other fundamental concepts of Euclidean geometry. The book is authored by Euclid, a Greek mathematician who lived in the third century BC and is widely regarded as the founder of geometry. The first six books of Euclid's Elements cover topics such as lines, angles, circles, triangles, and other basic geometric shapes, as well as concepts like proportion, similarity, and congruence. This edition of Euclid's work is a valuable resource for students and scholars of mathematics, as well as anyone interested in the history of mathematics and the development of geometry as a discipline.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.