| 1882
...In corollaries to the same proposition it is shown that all the internal angles of any rectilineal **figure, together with four right angles, are equal to twice as many right angles as the figure has** sides ; also, that all the external angles of any rectilineal figure formed by producing the sides... | |
| 1882
...triangle are equal to two right angles; and that all the interior angles of any rectilineal n'gure, **together with four right angles, are equal to twice as many right angles as the figure has** sides. 3. If the square described upon one of the sides of a triangle is equal to the squares described... | |
| Marianne Nops - 1882
...two-thirds of a right angle or 60°. III. All the interior angles of any rectilineal figure added to **four right angles are equal to twice as many right angles as the figure has** sides. Now, any figure can be divided into as many triangles as it has sides by drawing lines from... | |
| Euclid, Isaac Todhunter - Euclid's Elements - 1883 - 400 pages
...right angles as the figure has sides. But, by the foregoing Corollary all the interior angles of the **figure, together with four right angles, are equal to twice as many right angles as the figure has** sides. Therefore all the interior angles of the figure, together with all its exterior angles, are... | |
| Joseph Hughes - Education - 1883
...generally understood abbreviations for words may be used.] 1. 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. See Corollary to Euclid I. 32. If the figure be equiangular and four interior angles be equal... | |
| Education - 1883
...generally understood abbreviations for irorJs may be used.] 1. 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. See Corollary to Euclid I. 32. If the figure be equiangular and four interior angles be e ]ual... | |
| Mathematical association - 1883
...triangle the two acute angles are complementary. THEOR. 26. All the interior angles of any convex polygon **together with four right angles are equal to twice as many right angles as the** polygon has sides. THEOR. 27. The exterior angles of any convex polygon made by producing the sides... | |
| Woolwich roy. military acad - 1884
...perpendicular without producing the given line. 1. Prove that 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. There are two regular polygons, the number of sides of one is double the number of sides of... | |
| Euclides - 1884
...triangles are equal to 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. QED EXERCISE XXXVIII. 1. If a figure be a pentagon, or five-sided, how many right angles make... | |
| Palaestra Oxoniensis - 1884
...in a point are together equal to four right angles. (б) 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. (6) All the exterior angles of any rectilineal figure are together equal to four right angles.... | |
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