 | Edward Laurence - 1716 - عدد الصفحات: 408
...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 - 1762 - عدد الصفحات: 488
...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 any recHlineal figure ABCDE can be divided into as many triangles as the figure has fides , by... | |
 | Thomas Malton - 1774 - عدد الصفحات: 484
...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 - 1775 - عدد الصفحات: 534
...vertex of the triangles; that is", together with four right angles. Therefore all the angles of the figure, together with four right angles, are equal...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 - عدد الصفحات: 552
...vertex of the triangles; that isa, together with four right angles. Thprefpre all the angles of the figure, together with four right angles, are equal...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 - 1788 - عدد الصفحات: 728
...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.) - 1792 - عدد الصفحات: 532
...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 - 1795 - عدد الصفحات: 462
...vertex of the triangles : that is a, together witi four right angles. Therefore all the angles of the figure, together 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 - 1799 - عدد الصفحات: 374
...vertex of the triangles ; that is *, together with four right angles. Therefore all the angles of the figure, together with four right angles, are equal...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 angles.... | |
 | Robert Simson - 1804 - عدد الصفحات: 530
...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 any reCtilineal figure ABCDE can be divided into as many triangles as the figure has fides, by... | |
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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. 
