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### Contenido

 BOOK 9 Azioms 16 BOOK II 38 Problems relating to the First and Second Books 53 Ratios and Proportions 6981 69 BOOK IV 82 Problems relating to the Fourth Book 109113 109 BOOK V 116
 BOOK VI 126 Solids 126_162 143 Appendix 163164 163 OF LOGARITIMS 166170 166 APPLICATIONS OF GEOMETRY 211 MENSURATION OF SOLIDs 239 MENSURATION OF THE ROUND BODIES 248

### Pasajes populares

Página 12 - For this purpose it is divided into 360 equal parts called degrees, each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds. The degrees, minutes, and seconds are marked thus ° ' " ; and 9° 18' 16", are read, 9 degrees 18 minutes and 16 seconds.
Página 60 - After remarking that the mathematician positively knows that the sum of the three angles of a triangle is equal to two right angles...
Página 84 - 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.
Página 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...
Página 49 - The angle formed by a tangent and a chord is measured by half the intercepted arc.
Página 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.
Página 30 - The perpendicular is the shortest straight line that can be drawn from a given point to a given straight line; and...
Página 70 - To express that the ratio of A to B is equal to the ratio of C to D, we write the quantities thus : A : B : : C : D; and read, A is to B as C to D.
Página 12 - For the purpose of measuring angles, the circumference is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes; each minute into 60 equal parts, called seconds.
Página 59 - 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.