| Edward Wells - 1723 - 294 Seiten
...the Sum of all the Angles in all the Tri~ angles, into which the Figure is divided, will together be **equal to twice as ma-ny right Angles, as the Figure has Sides.** But the Angles about P, the inward Point of each Figure, wherein all the Triangles concur, are (by... | |
| Thomas Malton - 1774 - 440 Seiten
...by the Sides. ie equal to four Right Angles. And, all the internal Angles of any Right-lined Figure **are equal to twice as many Right Angles as the Figure has Sides,** wanting four, (Th. i. i0. i.) confequently, the external Angles being equal to thofe four (Th. 2. of... | |
| 1801 - 426 Seiten
...;• 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... | |
| Euclid, John Playfair - 1804 - 440 Seiten
...Wherefore^ if a fide of a triangle; &c. C^ED CoR. i. All the interior angles of any reftilmeal figure, **are equal to twice as many right angles as the figure has** fides, wanting four right angles. For any reftilineal figure ABCDE can be divided into as many triangles... | |
| Euclid, Robert Simson - 1806 - 518 Seiten
...1. gether 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 - 1806 - 311 Seiten
...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 - 493 Seiten
...four right angles. The exterior angles DEF, CDG, BCH, ABI, and EAK of the rectilineal figure ABODE **are taken together equal to four right angles. For...angles are equal to the four right angles which, by the** last Proposition, •were ahated, to form the aggregate of the interior angles. Cor. If the figure... | |
| Sir John Leslie - 1809 - 493 Seiten
...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...angles are equal to the four right angles which, by the** last Proposition, were abated, to form the aggregate of the interior angles. Cor. If the figure has... | |
| 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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