| Thomas Newton Andrews - 1881 - 160 sider
...— In Euclid, Book I., Prop, xxxi11., it is proved 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." If we have to describe a pentagon on the base AB, we must first calculate the angles at the... | |
| John Gibson - 1881
...greater side, or has the greater side opposite to it. 3. 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. 4. Describe a parallelogram that shall be equal to a given triangle BCD, and have one of its... | |
| 1882
...also equal, the triangles must be equal in every respect. 4 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. 5. Equal triangles upon equal bases in the same straight line and towards the same parts are... | |
| College of preceptors - 1882
...for the demonstration of which this one is 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... | |
| 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 - 1883 - 400 sider
...twice as many right angles as the figure has sides. But, by the foregoing Corollary all the interior **angles of the figure, together with four right angles,...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 - 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... | |
| 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... | |
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