| Alexander Ingram - Trigonometry - 1799 - 374 pages
...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...equal to twice as many right angles as the figure has** fides. COR. 2. All the exterior angles of any reftilineal figure, are together equal to four right... | |
| Mathematics - 1801 - 658 pages
...;• 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 - Trigonometry - 1804 - 530 pages
...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, Euclid - Circle-squaring - 1804 - 468 pages
...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 - Trigonometry - 1806 - 546 pages
...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 - Mathematics - 1806 - 320 pages
...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 - Mathematics - 1807 - 464 pages
...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 - Geometry, Analytic - 1809 - 542 pages
...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 - Geometry, Plane - 1809 - 522 pages
...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 - Geometry - 1810 - 554 pages
...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...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.... | |
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