Excerpt from The Parabola, Ellipse, and Hyperbola, Treated Geometrically Strate, on strictly geometrical principles, the most useful properties of these curves. In the definition of a tan gent I have avoided the tion of a limit, adopting, in preference, Euclid's definition; and the demonstrations depending thereon will, I think, he found somewhat new and interesting. 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 techlogy 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.