| Charles Hutton - 1811
...work ; add all the inward angles A, B, c, &C, together ; for when the work is right, their sum will **be 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... | |
| Charles Hutton - 1812
...work ; add all the inward angles A, B, c, &c, together ; for when the work is right, their sum will **be 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... | |
| Euclides - 1816 - 528 pagina’s
...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 figure' are together equal to four right angles.... | |
| John Playfair - 1819 - 317 pagina’s
...many right angles as the figure has sides, wanting four. For all the angles exterior and interior are **equal to twice as many right an,gles as the figure has sides ; but the** exterior are equal to four right angles ; therefore the interior are equal to twice as many right angles... | |
| John Playfair - 1819 - 333 pagina’s
...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 tegether equal to four... | |
| Charles Hutton - 1822
...work ; add all the inward angles A, n, c, &.c. together ; for when the work is right, their sum will **be equal to twice as many right angles as the figure has sides,** wanting 4 right angles. But when there is an angle, a* r, (hat bends inward*, and yon measure the external... | |
| Euclid - 1822 - 179 pagina’s
...Cor. 6. All the internal angles of any rectilineal figure, ABCDE, together with four right angles, are **equal to twice as many right angles as the figure has sides.** Take any point F within the figure and draw the right lines FA, FB, FC, FD, and FE. There are formed... | |
| Rev. John Allen - 1822 - 494 pagina’s
...FC, FD, FE ; there are formed as many triangles as the figure has sides, all the angles of which are **equal to twice as many right angles as the figure has sides** [by this prop.] ; but of these all the angles about the point F are equal to four right angles [Ctor.... | |
| Edward Riddle - 1824 - 551 pagina’s
...angles as the figure has sides. But all the interior angles, and four right angles, are also together **equal to twice as many right angles as the figure has sides,** (Theo. 25.) Hence the interior and the exterior angles of the figure are, together, equal to the interior... | |
| Peter Nicholson - 1825 - 372 pagina’s
...I). Cor. 1 . All the interior angles of any rectilínea] figure, together with four right angles, are **equal to 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... | |
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