| 1801
...;• add all the inward angles A, B, C, &c. together, and when the work is right, their sum will be **equal to twice as many right angles, as the figure has sides,** wanting four right angles. And when there is an angle, as F, that bends inward, and you measure the... | |
| Robert Simson - 1804
...point F which is the common Vertex of the triangles; that is », 1' together with four right angles. **Therefore all the angles of the figure, together with four right angles, are equal to twice as** manyright angles as the figure has fides. CoR. 2. All the exterior angles of any rectilineal figure... | |
| John Playfair - 1804 - 470 sider
...right angles as there are triangles b ; that is, as there are fides in the figure BCDEF ; and becaufe **all the angles of the figure, .together with four right angles, are** likewise equal to twice as many right angles as there are fides in the c i. cor. figure c ; therefore... | |
| Robert Simson - 1806 - 518 sider
...angles. Wherefore, if a side of a triangle, &c. QE D, CoR. 1 . All the interior angles of any rectilineal **figure, together with four right angles, are equal...twice as many right angles as the figure has sides.** For any rectilineal figure ABCDE can be divided into as many triangles as the figure has sides, by... | |
| John Playfair - 1806 - 311 sider
...to all the angles of the figure, together with four right angles, that is, the angles of the figure **are equal to twice as many right angles as the figure has sides,** wanting four. COR. 2. All the exterior angles of any rectilineal figure are together equal to four... | |
| Charles Hutton - 1807
...work ; add all the inward angles A, B, c, &c, together ; for when the work is right, their sum will ba **equal to twice as many right angles as the figure has sides,** wanting 4 right angles. But when there is an angle, as F, that bends inwards, and you measure the external... | |
| Sir John Leslie - 1809 - 524 sider
...interior one AED, is equal to two right angles. All the exterior angles therefore, added to the interior **angles, are equal to twice as many right angles as the figure has sides.** Consequently the exterior angles are equal to the four right angles which, by the last Proposition,... | |
| Sir John Leslie - 1809 - 493 sider
...is equal to two right angles. All the exterior angles therefore, added to the interior angles, ftre **equal to twice as many right angles as the figure has sides.** Consequently the exterior angles are equal to the four right angles which, by the last Proposition,... | |
| Euclid - 1810 - 518 sider
...point 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...twice as many right angles as the figure has sides.** Con. 2. All the exterior angles of any rectilineal figure, are .together equal to four right angles.... | |
| Charles Hutton - 1811
...triangles, is equal to two right angles (th. 17); therefore the sum of the angles of all the triangles is **equal to twice as many right angles as the figure has sides.** But the sum of all the angles about the point P, which are so many many of the angles of the triangles,... | |
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