| Euclid, John Playfair - Circle-squaring - 1804 - 440 pages
...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 as... | |
| Robert Simson - Trigonometry - 1806 - 518 pages
...the triangles ; that is », to15. 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... | |
| John Playfair - Euclid's Elements - 1806 - 311 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... | |
| Thomas Hodson - Arithmetic - 1806 - 458 pages
...work ; — add all the inward angles ABC, &c. together ; and if the work be right, the fum will be **equal to twice as many right angles as the figure has fides,** except four right angles ; but when there is an angle that bends inwards, as at F, and you meafure... | |
| Sir John Leslie - Geometry, Analytic - 1809 - 524 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,... | |
| Euclid - Geometry - 1810 - 518 pages
...a side of a triangle, &c. QED CoR. 1. All the interior angles of any rectilineal figure, together D **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,... | |
| Euclides - 1814
...the same angles are equal to the angles of the figure, together with the angles at the point F, which **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.... | |
| Euclides - 1816 - 528 pages
...the triangles : that is a, together is. 1. 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... | |
| John Playfair - Circle-squaring - 1819 - 333 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 tegether equal to... | |
| Euclid, Robert Simson - Geometry - 1821 - 516 pages
...angles. Wherefore if a side of a triangle, &c. QED COK. 1. All the interior aigles of any rectilineal **figure, together with four right angles, are equal to twice as many right** E' angles as the figure has sides. For any rectilineal figure ABCDE can be divided into as many triangles... | |
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