 | 1801 - 658 σελίδες
...;• 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... | |
 | Robert Simson - 1804
...point F which is the common Vertex of the triangles; that is », 1' together with four right angles. Therefore all the angles of the figure, together with four right angles, are equal to twice as manyright angles as the figure has fides. CoR. 2. All the exterior angles of any rectilineal figure... | |
 | John Playfair - 1804 - 470 σελίδες
...right angles as there are triangles b ; that is, as there are fides in the figure BCDEF ; and becaufe all the angles of the figure, .together with four right angles, are likewise equal to twice as many right angles as there are fides in the c i. cor. figure c ; therefore... | |
 | Robert Simson - 1806 - 518 σελίδες
...angles. Wherefore, if a side of a triangle, &c. QE D, CoR. 1 . All the interior angles of any rectilineal figure, together with four right angles, are equal...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, by... | |
 | John Playfair - 1806 - 320 σελίδες
...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... | |
 | Charles Hutton - 1807
...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... | |
 | John Leslie - 1809 - 542 σελίδες
...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,... | |
 | Sir John Leslie - 1809 - 493 σελίδες
...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,... | |
 | Euclid - 1810 - 518 σελίδες
...point F, which is the common vertex of the triangles: that is », together with four right angles. Therefore all the angles of the figure, together with...twice as many right angles as the figure has sides. Con. 2. All the exterior angles of any rectilineal figure, are .together equal to four right angles.... | |
 | Charles Hutton - 1811
...triangles, is equal to two right angles (th. 17); therefore the sum of the angles of all the triangles is equal to twice as many right angles as the figure has sides. But the sum of all the angles about the point P, which are so many many of the angles of the triangles,... | |
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... twice as many right angles as the figure has sides ; 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. 
