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THE present work, embracing the First Six Books of the Elements of Euclid, or in other words, the foundation of Plane Geometry, is intended as a companion volume to that issued with it on Practical Geometry; the one embracing the theory, the other the application.
The text adopted is that of the distinguished mathematician Dr. Simson. In very few instances has any change been made, and that only when it seemed to be positively necessary. Several attempts have been made, by altering the text and the arrangement, to reduce the demonstrations of Euclid to what may be considered a more popular form; but these have been attended with little success; and a text like that of Simson, clear, direct, and unencumbered, like absolute truth itself, will always be adopted by scholar and student.
It has been thought unnecessary to extend this volume beyond the first six books of the Elements, or to enlarge it by notes, as it will be followed by other works carrying the subject forward. A number of Exercises on each book have been given, the solutions of which will be published separately.