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Excerpt from An Introduction to Geometry and the Science of Form: Prepared From the Most Approved Prussian Text-Books Two straight lines may make 1, 2, or 4 angles, (fig. Three straight lines, if they meet at 1 point, may make at least 2, at most 6 angles, (fig. If they meet at 2 points, they may make at least 2, at most 8 angles; they cannot make 7 angles, because 3 angles cannot be formed at one point by 2 straight lines. If they meet at 3 points, they make at least 3, at most 12 angles; but never 11 angles. 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.

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