# Plane and Solid Geometry

Ginn, 1913 - Geometry - 470 pages

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### Contents

 PLANE GEOMETRY 1 RECTILINEAR FIGURES 25 THE CIRCLE 93 PROPORTION SIMILAR POLYGONS 151 AREAS OF POLYGONS 191 REGULAR POLYGONS AND CIRCLES 227 APPENDIX TO PLANE GEOMETRY 261 SOLID GEOMETRY 273
 POLYHEDRONS CYLINDERS AND CONES 317 THE SPHERE 381 APPENDIX TO SOLID GEOMETRY 431 RECREATIONS OF GEOMETRY 449 APPLICATIONS OF GEOMETRY 461 TABLE OF FORMULAS 469 Copyright

### Popular passages

Page 67 - The line joining the middle points of two sides of a triangle is parallel to the third side and equal to half of the third side.
Page 360 - Similar cylinders are to each other as the cubes of their altitudes, or as the cubes of the diameters of their bases.
Page 190 - If in a right triangle a perpendicular is drawn from the vertex of the right angle to the hypotenuse : I.
Page 152 - If the product of two quantities is equal to the product of two others, either two may be made the extremes of a proportion and the other two the means.
Page 54 - America, but know that we are alive, that two and two make four, and that the sum of any two sides of a triangle is greater than the third side.
Page 31 - In an isosceles triangle the angles opposite the equal sides are equal.
Page 77 - If two triangles have two sides of the one equal respectively to two sides of the other, but the included angle of the first greater than the included angle of the second, then the third side of the first is greater than the third side of the second. Given A ABC and A'B'C...
Page 51 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz.
Page 22 - The following are the most important axioms used in geometry: 1. If equals are added to equals the sums are equal. 2. If equals are subtracted from equals the remainders are equal. 3. If equals are multiplied by equals the products are equal. 4. If equals are divided by equals the quotients are equal.
Page 213 - The square constructed upon the sum of two lines is equivalent to the sum of the squares constructed upon these two lines, increased by twice the rectangle of these lines.