| 1882
...EXPLANATIONS. 1. All the internal angles of any convex rectilineal figure, together with four right angles, are **equal to twice as many right angles as the figure has sides** (Euclid I., 32 Cor.) n denoting the number of sides : and T two right angles. (n — 2) T = angles... | |
| College of preceptors - 1882
...referred to. 5. 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. The opposite sides and angles of a parallelogram are equal ; and the diameter bisects the parallelogram.... | |
| 1882
...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 upon... | |
| Euclid, Isaac Todhunter - Euclid's Elements - 1883 - 400 pages
...Corollary 2. Therefore 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.** COROLLARY 2. All the exterior angles of any rectilineal figure are together equal to four right angles.... | |
| Euclides - 1883 - 96 pages
...the base and from one another. COB. l.— The sum of the interior angles of any rectilineal figure is **equal to twice as many right angles as the figure has sides,** minus four right angles. Take any rectilineal figure, as ABCDEF, and take G, any point within it. Join... | |
| Joseph Hughes - Education - 1883
...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 to seven... | |
| Education - 1883
...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 to seven... | |
| Euclides - 1884
...PROPOSITION XXXII. 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.** Any rectilineal figure can be divided into as many triangles as the figure has sides, by drawing straight... | |
| Euclides - 1884
...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 twice... | |
| Woolwich roy. military acad - 1884
...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 the other,... | |
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