 | Euclid, John Playfair - Euclid's Elements - 1795 - 462 pages
...with its adjacent exterior ABD , is equal b to two right angles; therefore all the interior, to/ether with all the exterior angles of the figure, are equal to twice as many right fj angles as there are fides of the figure ; that is by the foregoing corollary, they are equal to... | |
 | Alexander Ingram - Trigonometry - 1799 - 374 pages
...every interior angle ABC, with its adjacent exterior ABD, is equal b to two right angles ; therefore all the interior, together with all the exterior angles...figure, are equal to twice as many right angles as there are fides of the figure ; that is, by the foregoing corollary, they are equal to all the interior... | |
 | 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... | |
 | John Playfair, Euclid - Circle-squaring - 1804 - 468 pages
...every interior angle ARC, with its adjacent exterior ABD, is equal b to two right angles ; therefore all the interior, together with all the exterior angles...figure, are equal to twice as many right angles as there are fides of the figure ; that is, by the foregoing corollary, they are equal to all the interior... | |
 | Robert Simson - Trigonometry - 1804 - 530 pages
...every interior angle ABC with its adjacent exterior ABD is equal b to two right angles ; therefore all the interior together with all the exterior angles...figure, are equal to twice as many right angles as there are fides of the figure, that is, by the • foregoing Corollary, they are equal jj J3 to all... | |
 | John Playfair - Mathematics - 1806 - 320 pages
...has sides are equal 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... | |
 | Robert Simson - Trigonometry - 1806 - 546 pages
...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.... | |
 | 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
...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,... | |
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... twice as many right angles as the figure has sides. 
