 | Robert Simson - Trigonometry - 1762 - 488 pages
...i. 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 fides. C o R. 2 . All the exterior angles of any rectilineal figure are together equal to four right angles.... | |
 | Euclid - Geometry - 1765 - 492 pages
...fpoken of, is equal to two right angles, all the angles of tiie figure, together with thefe outward angles, are equal to twice as many right angles as the figure has angles, that is, has fides. But fince all the inward angles together, with four right angles, has been... | |
 | William Payne - Euclid's Elements - 1768 - 316 pages
...fides - - - conAnd each triangle contains two right angles - 86» Therefore, all the triangles contain twice as many, right angles as the figure has fides - - ^ But all the angles at the point F taken together, areeqnal to four right angles • - - 68And the remaining... | |
 | Thomas Malton - 1774 - 484 pages
...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.... | |
 | Robert Simson - Trigonometry - 1775 - 534 pages
...is", together 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 fides. CoR. 2. All the exterior angles of any re&ilineal figure, are together equal to four right angles.... | |
 | Euclid - 1781 - 552 pages
...isa, together with four right angles. Thprefpre all the angles of the figure, together with four right angles, are equal to twice as many right angles as the figure has fides. CoR. 2. All the exterior angles of any rectilineal figure, arc together equal to four right angle*.... | |
 | Charles Hutton - Measurement - 1788 - 728 pages
...work ; add all the inward angles A, B, c, &c, together, and when the work is right, their fum will be equal to twice as many right angles as the figure has fides, wanting 4 right angles. And when there is an angle, as F, that bends inwards, and you meafure the external... | |
 | John McGregor (teacher of mathematics.) - Mathematics - 1792 - 532 pages
...cor. i ft, I. 32. Euclid. All the anterior angles of any reoilineal figure, together with four right angles, are equal to twice as many right angles as the figure has fides. Hence the following rule. RULÉ. From double thé number of fides f übt vail: 4, and the remainder... | |
 | William Emerson - Geometry - 1794 - 270 pages
...the figure has fides or angles. And each triangle contains two right angles (2. II), 'fo thefe amount to twice as many right angles, as the figure has fides; but the angles at О are to be abated, and thefe amount to four right angles (Cor. i. Prop. i. I). Cor.... | |
 | Euclid, John Playfair - Euclid's Elements - 1795 - 462 pages
...triangle; &c. Q^ED CoR. i. All the interior angles of any reftilineal figure, together with four right angles, are equal to twice as many right angles as the figure has fides. For any reftilineal figure ABCDE can be divided into as many triangles as the figure has lides, by... | |
| |
All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides. 
