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 Bøker Bok F, which is the common vertex of the triangles: that is », together with four right angles. Therefore all the angles of the figure, together with four right angles are equal to twice as many right angles as the figure has sides. The Elements of Euclid, the parts read in the University of Cambridge [book ... - Side 33
av Euclides - 1846
Uten tilgangsbegrensning - Om denne boken ## ELEMENTS OF GEOMETRY AND TRIGONOMETRY

A. M. LEGENDRE - 1852
...triangles in the figure ; that is, as many times as there are sides, less two. But this product is equal to twice as many right angles as the figure has sides, less four right angles. Cor. 1. The sum of the interior angles in a quadrilateral, is equal to two...
Uten tilgangsbegrensning - Om denne boken ## The synoptical Euclid; being the first four books of Euclid's Elements of ...

Euclides - 1853
...common vertex of the triangles; that is, (I. 15. Cor. 2.) together with four right angles. Therefore all the angles of the figure, together with four right...twice as many right angles as the figure has sides. COK. 2. — All the exterior angles of any rectilineal figure are together equal to four right angles....
Uten tilgangsbegrensning - Om denne boken ## The first six books of the Elements of Euclid, with numerous exercises

Euclides - 1853 - 147 sider
...common vertex of the triangles : that is (i. 15, cor. 2), together with four right angles. Therefore all the angles of the figure, together with four right...twice as many right angles as the figure has sides. Сод. 2. All the exterior angles of any rectilineal figure are together equal to four right ,ingles....
Uten tilgangsbegrensning - Om denne boken ## The Elements of Euclid: With Many Additional Propositions ..., Del 1

Euclid - 1853 - 136 sider
...internal angles, are equal to twice as many right angles as the figure has sides; but the internal angles, together with four right angles, are equal to twice as many right angles as the figure has sides (6); take away from both the internal angles, and the external angles remain, equal to four right angles...
Uten tilgangsbegrensning - Om denne boken ## The Elements of Euclid. Books I.-VI.; XI. 1-21 XII. 1-2. A New Text ..., Bok 1

Euclides - 1853
...the angles of the polygon together with four right angles. But all the angles of the polygon GHKLM together with four right angles are equal to twice as many right angles as the polygon has sides (i. 32. Cor. i), that is, as there are plane angles constituting the solid angle...
Uten tilgangsbegrensning - Om denne boken ## The geometry, by T. S. Davies. Conic sections, by Stephen Fenwick

...angles. Wherefore, if a side of a triangle, etc. QED COR. 1. All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many D right angles as the figure has sides. E.«=^lT"\~~-^, \ 4C-\ For any rectilineal figure ABCDE can...
Uten tilgangsbegrensning - Om denne boken ## The popular educator, Volumer 5-6;Volum 8

Popular educator - 1854
...angles of these tiungles are equal to twice as many right anales as the figure has sides. Therefore all the angles of the figure together with four right angles are equal to twice as many right ung'es as the figure has sides. Corollary 2. All the exterior angles of any rectilineal figure, made...
Uten tilgangsbegrensning - Om denne boken ## Orr's Circle of the Sciences: The mathematical sciences

William Somerville Orr - 1854
...angles of the ßgure, together with Jour right angle», w = twice as many right angles as theßgure ha> sides. COR. 2. — All the exterior angles of any rectilineal figure are together = four right angles. Because every interior angle ABC, with its adjacent exterior angle ABD, is = *Pr....
Uten tilgangsbegrensning - Om denne boken ## Nature, Volum 21

Sir Norman Lockyer - 1880
...the flat angle we may take Theorem XXVI. of the syllabus, that the interior angles of any polygon, together with four right angles, are equal to twice as many right angles as the figure has sides. In the new notation we would say that the sum of the interior angles of the polygon is equal to a number...
Uten tilgangsbegrensning - Om denne boken ## The Elements of Euclid for the Use of Schools and Colleges: With Notes, an ...

Isaac Todhunter - 1880 - 400 sider
...Wherefore, if a side of any triangle &c. <JE». COROLLARY 1. All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has side*. For any rectilineal figure ABCDE can be divided into as many triangles as the figure has sides,...
Uten tilgangsbegrensning - Om denne boken