| Edward Laurence - Surveying - 1716 - 375 pages
...external < a, is equal to t wo right Angles (by tbe^tb /)confequently all the internal and external **Angles are equal to twice as many right Angles as the Figure has fides.** But all its internal Angles are equal to twiee as many right Angles eicept 4 as it has fides (by the... | |
| Robert Simson - Trigonometry - 1762 - 466 pages
...at the «. t (,„,. point F which is the common Vertex of the triangles ; that is ", toM. i. gether **with four right angles. Therefore all the angles of...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, Edmund Stone - Geometry - 1765 - 464 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... | |
| Thomas Malton - 1774 - 440 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.... | |
| Euclid - 1781 - 520 pages
...F, which is the common vertex of the triangles; that isa, together with four right angles. Thprefpre **all the angles of the figure, together with four right...has fides. CoR. 2. All the exterior angles of any** rectilineal figure, arc together equal to four right angle*. Becaufe every interior angle ABC, with... | |
| Robert Simson - Trigonometry - 1781 - 466 pages
...with the angles at aa Cor. the point F which is the common Vertex of the triangles ; that is*, *s ', **together with four right angles. Therefore all the...twice as many right angles as the figure has fides.** Cou. 2. All the exterior angles of any rectilineal figure are together equal to four right angles.... | |
| Charles Hutton - Measurement - 1788 - 703 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 - 431 pages
...angles of any regular polygon* 3By cor. i ft, I. 32. Euclid. All the anterior angles of any reoilineal **figure, together with four right angles, are equal...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... | |
| Euclid, John Playfair - Electronic book - 1795 - 400 pages
...with the angles at the point F, which B the common vertex of the triangles : that is a, together witi **four right angles. Therefore all the angles of the...with four right angles, are equal to twice as many** rigit angles as the fi rurehas fides. CoR. 2. All the exterior angles of any reftilineal figure an... | |
| Alexander Ingram - Trigonometry - 1799 - 351 pages
...angles. Wherefore, if a fide of a triangle, &c. Q^ED CoR. i. All the interior angles of any rectilineal **figure, together with four right angles, are equal...twice as many right angles as the figure has fides.** For For any reftilineal figure ABCDE can be divided into as many triangles as the figure has fides,... | |
| |