OF PRACTICAL GEOMETRY, FOR SCHOOLS AND WORKMEN. Horace Grant BY THE AUTHOR OF "ARITHMETIC FOR YOUNG CHILDREN," "EXERCISES FOR THE SENSES," LONDON: GROOMBRIDGE & SONS, 5, PATERNOSTER ROW. 1852. 183.c.15. NOTICE. THIS Treatise is intended for young workmen, and for the older pupils in schools where theoretical Geometry is not taught. It explains only the most simple and useful facts and operations which every person ought to know. A great part of it does not require a knowledge even of Arithmetic; and no kind of explanation has been used that is likely to be found difficult by a beginner. In learning the subject, each portion should be read carefully several times; and the drawings should also be copied more than once, of as large a size as possible. When the treatise is used by a teacher, he should explain each part, and make large drawings before the pupils.. He should then question the pupils upon every part, and should cause them to make drawings on a black board or slate, or upon paper, as large as is convenient. CONTENTS. PAGE. 1223 3 3 4 41 56 ANGLES-Right-Acute-Obtuse-Adjacent-Made by Lines Cutting-Vertical How Marked by Letters Plane-Rounded-Rough. 13 Rectangle-Parallelogram. Diagonal Line . 108 CURVILINEAL FIGURES 130-134 Figures-Equal-Similar-Identical-and Symmetrical 135 Planes-Parallel-Horizontal-Vertical-Meeting-Intersecting |