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### Innhold

 Dkf1n1t ons and Remarks 9 9 Axioms 16 Of the C1rcle 33 Problems relating to the First and Second Books 5368 53 BOOK III 69 BOOK IV 82 Problems relating to the Fourth Book 109 109 BOOK V 116
 BOOK VI 126 Appendix 163164 163 181 181 Examples 193 Application to Heights and Distances 202 APPLICATIONS OF GEOMETRY 211 Mensurat1on of the Round Bod1es 248

### Populćre avsnitt

Side 24 - 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 will be equal in all their parts." Axiom 1. "Things which are equal to the same thing, are equal to each other.
Side 209 - Being on a horizontal plane, and wanting to ascertain the height of a tower, standing on the top of an inaccessible hill, there were measured, the angle of elevation of the top of the hill 40°, and of the top of the tower 51° ; then measuring in a direct line 180 feet farther from the hill, the angle of elevation of the top of the tower was 33° 45' ; required the height of the tower.
Side 55 - To bisect a given finite straight line, that is, to divide it into two equal parts. Let AB be the given straight line; it is required to divide it into two equal parts.
Side 11 - A circle (Fig. 38) is a figure bounded by a curved line, called the circumference, every point of which is equally distant from a point within, called the center.
Side 60 - After remarking that the mathematician positively knows that the sum of the three angles of a triangle is equal to two right angles...
Side 25 - 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.
Side 130 - ... or cylinder be cut by a plane parallel to the base, the section is a figure parallel and similar to the base. The one point a...
Side 124 - If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent.
Side 133 - A zone is a portion of the surface of a sphere, included between two parallel planes which form its bases.