| Education - 1847
...paid off? OEOMETBY AND TRIGOSO1IETBY. SECTION I. — 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** sides. 2. Equal triangles, upon equal bases in the same straight line, and towards the same parts,... | |
| Great Britain. Committee on Education - School buildings - 1847
...debt be paid off? GEOMETRY AND TRIGONOMETRY. SECTION I. 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** hag sides. 2. Equal triangles, upon equal bases in the same straight line, and towards the same parts,... | |
| Euclides - 1848
...triangle are together equal to two right angles. COR. 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** sides. COB. 2. All the exterior angles of any rectilineal figure, made by producing the sides successively... | |
| Euclid, Thomas Tate - 1849 - 108 pages
...triangles ; that is (Cor. 2. i. 15.), 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. COR. 2. All the exterior angles of any rectilineal figuro, are together equal to four right... | |
| Elias Loomis - Conic sections - 1849 - 226 pages
...(Prop. XXVII., BI), that is, as there are sides of the polygon BCDEF. Also, the angles of the polygon, **together with four right angles, are equal to twice as many right angles as the figure has** sides (Prop. XXVIII., BI); hence all the angles of the triangles are equal to all the angles of the... | |
| 1850
...revelation could supersede the reasoning of the proposition that all the interior angles of any rectilinear **figure, together with four right angles, are equal to twice as many right angles as the figure has** sides : and the dictum is equally true, too, in moral science — only in any particular case to dogmatize... | |
| Great Britain. Committee on Education - 1850
...Question is only to be answered in each Section.) Section I. 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** sides. 2. If the square described upon one side of a triangle be equal to the sum of the squares described... | |
| Her MAjesty' Inspectors of schools - 1850
...Question is only to be answered in each Section.) Section I. 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** sides. 2. If the square described upon one side of a triangle be equal to the sum of the squares described... | |
| John William Colenso (bp. of Natal.) - 1851
...required. 15. It appears, from Euc. I. 32, Cor. 1, that ' 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** sides.' Hence if n be the number of sides of any rectilineal figure, we have the sum of its n angles... | |
| Ralph Smyth, Sir Henry Edward Landor Thuillier - Surveying - 1851 - 718 pages
...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. Cor. 4. All the exterior angles of any rectilineal figure are together equal to four right angles.... | |
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