Excerpt from Elements of Geometry

It is necessary to the understanding of this work, that the reader should have a knowledge Of the theory of proportions which is explained in common treatises, either Of arithmetic or algebra; he is supposed also to be acquainted with the first rules of algebra; such as the addition and subtraction Of quantities, and the most simple operations belonging to equations of the first degree. The ancients, who had not a knowledge Of algebra, sup plied the want Of it by reasoning and by the use of proportions, which they managed with great dexterity. As for us, who have this instrument in addition to what they possessed, we should do wrong not to make use Of it, if any new facilities are to be deriv ed from it. I have, accordingly, not hesitated to employ the signs and operations of algebra, when I have thought it neces sary; but I have guarded against involving in difficult Operations what ought by its nature to be simple; and all the use I have made Of algebra, in these elements, consists, as I have already said, in a few very simple rules, which may be understood almost without suspecting that they belong to algebra.

Besides, it has appeared to me, that, if the study Of geometry ought to be preceded by certain lessons in algebra, it would be not less advantageous to carry on the study Of these two sciences together, and to intermix them as much as possible. According as we advance in geometry, we find it necessary to combine together a greater number Of relations; and algebra may be Of great service in conducting us to our conclusions by the readiest and most easy method.

This work is divided into eight sections, four Of which treat Of plane geometry, and four Of solid geometry.

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This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

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**Book Description **Forgotten Books 7/31/2016, 2016. Paperback or Softback. Book Condition: New. Elements of Geometry (Classic Reprint). Book. Bookseller Inventory # BBS-9781332515837

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**Book Description **Forgotten Books, United States, 2017. Paperback. Book Condition: New. Language: English . Brand New Book ***** Print on Demand *****. Excerpt from Elements of Geometry It is necessary to the understanding of this work, that the reader should have a knowledge Of the theory of proportions which is explained in common treatises, either Of arithmetic or algebra; he is supposed also to be acquainted with the first rules of algebra; such as the addition and subtraction Of quantities, and the most simple operations belonging to equations of the first degree. The ancients, who had not a knowledge Of algebra, sup plied the want Of it by reasoning and by the use of proportions, which they managed with great dexterity. As for us, who have this instrument in addition to what they possessed, we should do wrong not to make use Of it, if any new facilities are to be deriv ed from it. I have, accordingly, not hesitated to employ the signs and operations of algebra, when I have thought it neces sary; but I have guarded against involving in difficult Operations what ought by its nature to be simple; and all the use I have made Of algebra, in these elements, consists, as I have already said, in a few very simple rules, which may be understood almost without suspecting that they belong to algebra. Besides, it has appeared to me, that, if the study Of geometry ought to be preceded by certain lessons in algebra, it would be not less advantageous to carry on the study Of these two sciences together, and to intermix them as much as possible. According as we advance in geometry, we find it necessary to combine together a greater number Of relations; and algebra may be Of great service in conducting us to our conclusions by the readiest and most easy method. This work is divided into eight sections, four Of which treat Of plane geometry, and four Of solid geometry. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works. Bookseller Inventory # AAV9781332515837

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Published by
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ISBN 10: 1332515835
ISBN 13: 9781332515837

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**Book Description **Forgotten Books, United States, 2017. Paperback. Book Condition: New. Language: English . Brand New Book ***** Print on Demand *****.Excerpt from Elements of Geometry It is necessary to the understanding of this work, that the reader should have a knowledge Of the theory of proportions which is explained in common treatises, either Of arithmetic or algebra; he is supposed also to be acquainted with the first rules of algebra; such as the addition and subtraction Of quantities, and the most simple operations belonging to equations of the first degree. The ancients, who had not a knowledge Of algebra, sup plied the want Of it by reasoning and by the use of proportions, which they managed with great dexterity. As for us, who have this instrument in addition to what they possessed, we should do wrong not to make use Of it, if any new facilities are to be deriv ed from it. I have, accordingly, not hesitated to employ the signs and operations of algebra, when I have thought it neces sary; but I have guarded against involving in difficult Operations what ought by its nature to be simple; and all the use I have made Of algebra, in these elements, consists, as I have already said, in a few very simple rules, which may be understood almost without suspecting that they belong to algebra. Besides, it has appeared to me, that, if the study Of geometry ought to be preceded by certain lessons in algebra, it would be not less advantageous to carry on the study Of these two sciences together, and to intermix them as much as possible. According as we advance in geometry, we find it necessary to combine together a greater number Of relations; and algebra may be Of great service in conducting us to our conclusions by the readiest and most easy method. This work is divided into eight sections, four Of which treat Of plane geometry, and four Of solid geometry. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works. Bookseller Inventory # AAV9781332515837

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Published by
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ISBN 13: 9781332515837

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**Book Description **Forgotten Books, United States, 2017. Paperback. Book Condition: New. Language: English . This book usually ship within 10-15 business days and we will endeavor to dispatch orders quicker than this where possible. Brand New Book. Excerpt from Elements of Geometry It is necessary to the understanding of this work, that the reader should have a knowledge Of the theory of proportions which is explained in common treatises, either Of arithmetic or algebra; he is supposed also to be acquainted with the first rules of algebra; such as the addition and subtraction Of quantities, and the most simple operations belonging to equations of the first degree. The ancients, who had not a knowledge Of algebra, sup plied the want Of it by reasoning and by the use of proportions, which they managed with great dexterity. As for us, who have this instrument in addition to what they possessed, we should do wrong not to make use Of it, if any new facilities are to be deriv ed from it. I have, accordingly, not hesitated to employ the signs and operations of algebra, when I have thought it neces sary; but I have guarded against involving in difficult Operations what ought by its nature to be simple; and all the use I have made Of algebra, in these elements, consists, as I have already said, in a few very simple rules, which may be understood almost without suspecting that they belong to algebra. Besides, it has appeared to me, that, if the study Of geometry ought to be preceded by certain lessons in algebra, it would be not less advantageous to carry on the study Of these two sciences together, and to intermix them as much as possible. According as we advance in geometry, we find it necessary to combine together a greater number Of relations; and algebra may be Of great service in conducting us to our conclusions by the readiest and most easy method. This work is divided into eight sections, four Of which treat Of plane geometry, and four Of solid geometry. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works. Bookseller Inventory # LIE9781332515837

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Published by
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ISBN 10: 1332515835
ISBN 13: 9781332515837

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**Book Description **Forgotten Books, 2017. Book Condition: New. This item is printed on demand for shipment within 3 working days. Bookseller Inventory # LP9781332515837

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