# The Thirteen Books of Euclid's Elements, Volume 3

The University Press, 1908 - Mathematics, Greek

### What people are saying -Write a review

5 stars
 7
4 stars
 3
3 stars
 2
2 stars
 2
1 star
 0

#### LibraryThing Review

User Review  - wildbill - LibraryThing

The first time I started this book I was in my teens. This time I was able to get past the first fifty pages and found an enjoyable and at times disturbing book. The book contains elements of satire ... Read full review

#### LibraryThing Review

User Review  - donbuch1 - LibraryThing

This classic series represents the Western canon not without academic controversy. The latest volumes of the Great Books include some women writers, but they are still definitely underrepresented ... Read full review

### Contents

 I x II 10 III 14 IV 101 V 102 VI 177 VII 178
 VIII 255 IX 260 X 272 XI 365 XII 371 XIII 438 XIV 440

### Popular passages

Page 14 - Two unequal magnitudes being set out, if from the greater there be subtracted a magnitude greater than its half, and from that which is left a magnitude greater than its half, and if this process be repeated continually, there will be left some magnitude which will be less than the lesser magnitude set out. the
Page 262 - 4. A plane is at right angles to a plane when the straight lines drawn, in one of the planes, at right angles to the common section of the planes are at right angles to the remaining plane. 5. The inclination of a straight line to a plane is,
Page 14 - than its half, and from that which is left a magnitude greater than its half, and if this process be repeated continually, there will be left some magnitude which will be less than the magnitude C. For C if multiplied
Page 347 - Solid parallelepipeds contained by parallelograms equiangular to one another, each to each, that is, of which the solid angles are equal, each to each, have to one another the ratio compounded of the ratios of their sides. The
Page 305 - a plane is at right angles to a plane, when the straight lines drawn, in one of the planes, at right angles to the common section of the planes are at right angles to the remaining plane.
Page 28 - squares on straight lines incommensurable in length have not to one another the ratio which a square number has to a square number; and squares which have not to one another the ratio which a square number has to a square number will not have their sides commensurable in length either.
Page 297 - Also, from a point above a plane there can be but one perpendicular to that plane; for, if there could be two, they would be parallel to one another [xi. 6], which is absurd.
Page 262 - 6. The inclination of a plane to a plane is the acute angle contained by the straight lines drawn at right angles to the common section at the same point, one in each of the planes.
Page 26 - PROPOSITION 6. If two magnitudes have to one another the ratio which a number has to a number, the magnitudes will be commensurable. For let the two magnitudes A, B have to one another the ratio which the number D has to the number E
Page 26 - For let A be divided into as many equal parts as there are units in D, and let C be equal to one of them ; and let F be made up of as many magnitudes equal to C as