Elements of Descriptive Geometry is a comprehensive textbook written by John B. Millar and originally published in 1878. The book is a guide to the principles and techniques of descriptive geometry, which is the branch of mathematics concerned with the representation of three-dimensional objects on a two-dimensional surface. The book begins with an introduction to the basic concepts of descriptive geometry, including the projection of points, lines, and planes onto a plane. It then moves on to more advanced topics, such as the projection of solids, the intersection of planes and lines, and the construction of curves and surfaces. Throughout the book, Millar provides clear and concise explanations of each concept, accompanied by numerous diagrams and illustrations to aid the reader's understanding. He also includes a variety of practical examples and exercises to help readers apply the principles of descriptive geometry to real-world problems. Elements of Descriptive Geometry is an essential resource for students and professionals in the fields of engineering, architecture, and design, as well as anyone interested in the principles of geometry and spatial visualization. Despite being over 140 years old, the book remains a valuable reference for anyone seeking a thorough understanding of the fundamentals of descriptive geometry.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.