Suche Bilder Maps Play YouTube News Gmail Drive Mehr »
Anmelden
 Books Bücher 1 - 10 von 123 in Thus, for" example, he to whom the geometrical proposition, that the angles of a...
Thus, for" example, he to whom the geometrical proposition, that the angles of a triangle are together equal to two right angles...
Elements of Geometry and Plane Trigonometry: With an Appendix, and Copious ... - Seite 292
von Sir John Leslie - 1817 - 432 Seiten
Vollansicht - Über dieses Buch

## Elements of Geometry, Geometrical Analysis, and Plane Trigonometry: With an ...

Sir John Leslie - 1809 - 493 Seiten
...An exterior angle of a triangle is equal to both its opposite interior angles, and all the interior angles of a triangle are together equal to two right angles. The exterior angle BCD, formed by the production of the side AC of the triangle ABC, is equal to the two...
Vollansicht - Über dieses Buch

## THE EDINBURGH REVIEW

D. WILLIAM - 1810
...deduced. If we could demonftrate, independently of all confideration of parallel lines, that the three angles of a triangle are together equal to two right angles, the object in view would be accomplifhed, and the difficulty, in this part of the Elements, would be entirely...
Vollansicht - Über dieses Buch

## Works, with a memoir of the author, Band 4

John Playfait - 1822
...deduced. If we could demonstrate, independently of all consideration of parallel lines, that the three angles of a triangle are together equal to two right angles, the object in view would be accomplished, and the difficulty, in this pait of the Elements, would be enVOL....
Vollansicht - Über dieses Buch

## The Works of John Playfair ...: With a Memoir of the Author ...

John Playfair - 1822
...deduced. If we could demonstrate, independently of all consideration of parallel lines, that the three angles of a triangle are together equal to two right angles, the object in view would be accomplished, and the difficulty, in this part of the Elements, would be entirely...
Vollansicht - Über dieses Buch

## Iron: An Illustrated Weekly Journal for Iron and Steel ..., Band 15

Perry Fairfax Nursey - 1831
...before proved that the angle ADe is an acute angle of 90 degrees, whence it follows that as the three angles of a triangle are together equal to two right angles, the remaining angle /AD must likewise be an acute angle of 90 degrees, and, as before, since the two angles/...
Vollansicht - Über dieses Buch

## The Mechanics' Magazine, Museum, Register, Journal, and Gazette, Band 15

1831
...before proved that the angle ADe is an acute angle of 90 degrees, whence it follows that as the three angles of a triangle are together equal to two right angles, the remaining angle fh D must likewise be an acute angle of 90 degrees, and, as before, since the two augles/DA...
Vollansicht - Über dieses Buch

## The Penny Cyclopaedia of the Society for the Diffussion of Useful ..., Band 19

1841
...assertion to be proved, in that the latter does not require any specific object to be effected. Thus, ' all the angles of a triangle are together equal to two right angles ' is to be shown or made evident, and is a theorem ; but ' to draw a circle through three given points...
Vollansicht - Über dieses Buch

## Penny Cyclopaedia of the Society for the Diffusion of Useful ..., Bände 19-20

1841
...assertion to be proved, in that the latter does not require any specific object to be effected. Thus, ' all the angles of a triangle are together equal to two right angles ' is to be shown or made evident, and is a theorem ; but ' to draw a circle through thiee given points'...
Vollansicht - Über dieses Buch

## The stars and the earth, or, Thoughts upon space, time, and eternity [by F ...

Felix Eberty - 1846
...anything which contradicts it to be absurd. Thus, for example, he to whom the geometrical proposition that the angles of a triangle are together equal to two right angles, has been intelligibly demonstrated, must acknowledge the truth of it ; but he has not necessarily comprehended...
Vollansicht - Über dieses Buch

## The theory of reasoning

Samuel Bailey - 1851
...An exterior angle of a triangle is equal to both its opposite interior angles, and all the interior angles of a triangle are together equal to two right angles. The exterior angle BCD formed by the production of the side AC of the triangle ABC, is equal to the / \...
Vollansicht - Über dieses Buch