# The Thirteen Books of Euclid's Elements, Volume 3 (Google eBook)

The University Press, 1908 - Mathematics, Greek

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#### Review: Great Books of the Western World

User Review  - Garrett Starr - Goodreads

I have always wanted this collection, but over the years I purchased other books instead. When our church moved into our current digs, this entire collection was hidden away in a back room and covered ... Read full review

#### Review: The Thirteen Books of the Elements, Vol. 1 (The Elements #1)

User Review  - Kellie - Goodreads

I read this, "proved" most of the propositions, and understood about 1/3 of it. Read full review

### Contents

 Introductory note x Definitions 260 Propositions 272 Historical note 365 Historical note 438
 The socalled Book XIV by Hypsicles 512 Addenda et Corrigenda 521 Greek 529 English 535

### 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