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### Inhalt

 RECTILINEAR FIGURES 15 POINTS LINES AND SURFACES 22 EQUALITY 28 V 39 VIII 48 6574 65 LOCI AND CONCURRENCE 75 CIRCLES 87
 APPENDIX 183 INCOMMENSURABLE CASE 189 DEFINITIONS AND FORMULAS 192 III 195 194202 216 RELATIVE POSITION OF LINES AND PLANES 233 93 275 POLYHEDRONS CYLINDERS 278

 CIRCLE DEFINITIONS 93 CIRCLE THEOREMS 101 CONSTRUCTIONS USING CIRCLE THEOREMS 113 EQUIVALENCE AND AREA 119 RATIO AND PROPORTION 139 SIMILAR FIGURES 145 CONSTRUCTIONS 152 REGULAR POLYGONS AND CIRCLES 159 GENERAL 166
 THE SPHERE 314 II 322 III 344 VOLUME OF A SPHERE AND ITS PARTS 350 SUMMARY OF THE FORMULAS OF SOLID GEOMETRY 367 LOGIC 393 THE GENERAL POLYHEDRON 400 Urheberrecht

### Beliebte Passagen

Seite 343 - The sum of the angles of a spherical triangle is greater than two and less than six right angles ; that is, greater than 180° and less than 540°. (gr). If A'B'C' is the polar triangle of ABC...
Seite 329 - The sum of the sides of any spherical polygon is less than the circumference of a great circle.
Seite 297 - Every section of a circular cone made by a plane parallel to the base is a circle.
Seite 260 - The acute angle which a straight line makes with its own projection upon a plane is the least angle it makes with any line of that plane.
Seite 389 - The areas of two triangles which have an angle of the one equal to an angle of the other are to each other as the products of the sides including the equal angles.
Seite 48 - If two triangles have two sides, and the included angle of the one equal to two sides and the included angle of the other, each to each, the two triangles are equal in all respects.
Seite 73 - The line which joins the mid-points of two sides of a triangle is parallel to the third side and equal to one half of it.
Seite 212 - To prove the conclusion, it is necessary to use the additional geometrical principle that but one parallel to a given line can be drawn through a given point.
Seite 304 - The volume of a circular cone is equal to one third the product of its base by its altitude.
Seite 311 - The greatest right circular cylinder that can be inscribed in a right circular cone is one whose altitude is one third that of the cone.