Excerpt from Elements of Geometry: Containing the First Six Books of Euc, With a Supplement on the Quadrature of the Circle and the Geometry of Solids, to Which Added, Elements of Plane and Spherical Trigonometry In the second Book, also, some algebraic signs have been introduced, for the sake of representing more readily the addition and subtraction of the rectangles on which the demonstrations depend. The use of such sym helical writing, in translating from an original, where no symbols are used, cannot, I think, be regarded as an unwarrantable liberty for, if by that means the translation is not made into English, it is made into that univer sal language so much sought after in all the sciences, but destined, it would seem, to be enjoyed only by the mathematical. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.