| Euclides - 1864 - 262 pages
...line standing on another straight line, makes the adjacent angles equal to one another, each of these angles is called a right angle ; and the straight line which stands on the other is called a perpendicular to it. XI. An obtuse angle is that which is greater than a right angle. xn.... | |
| Euclides - 1864 - 448 pages
...which is contained by lOB, CB, is called the angle DBC, or CBD. X. When a straight line standing on another straight line, makes the adjacent angles equal to one another, each of these angles is called a right angle ; and the straight line which stands on the other is called a... | |
| Robert Potts - 1865 - 528 pages
...that which is contained by DB, CB, is called the angle DBC, or CBD, When a straight line standing on another straight line, makes the adjacent angles equal to one another, each of these angles is called a right angle ; and the straight liae which stands on the other ia called a... | |
| Euclides - 1865 - 402 pages
...therefore the angle AFE is equal to the angle BFE ; (I. 8) but 'when a straight line standing upon another straight line makes the adjacent angles equal to one another, each of them is a right angle ; (i. def. 10) therefore each of the angles AFE, BFE, is a right angle; wherefore... | |
| William Harris Johnston - 1865 - 478 pages
...other angle between them, such as the angles ВАС and DA 0. When one straight line standing upon another straight line makes the adjacent angles equal to one another, each such angle is called a right angle, and either of the straight lines is said to be a perpendicular... | |
| Edward Clarke Lowe - 1866 - 172 pages
...another, which meet together, but are not in the same straight line. 10. When a straight line standing on another straight line makes the adjacent angles equal to one another, each of these angles is called a right angle; and the straight line which stands on the other is & perpendicular... | |
| Euclid, Isaac Todhunter - Euclid's Elements - 1867 - 424 pages
...15. therefore the angle AFE is equal to the angle BFE. [I. 8. But when a straight line, standing on another straight line, makes the adjacent angles equal...another, each of the angles is called a right angle ; [I. Definition 10. therefore each of the angles AFE, BFE is a right angle. Therefore the straight... | |
| Euclid, Isaac Todhunter - Euclid's Elements - 1867 - 426 pages
...15. therefore the angle ADG is equal to the angle BDG. [I. 8. But when a straight line, standing on another straight line, makes the adjacent angles equal to one another, each of the angle's is called "a right angle ; [I. Definition 10. therefore the angle BDG is a right angle. But... | |
| Robert Potts - 1868 - 434 pages
...15.) therefore the angle AFE is equal to the angle BFE; (I. 8.) but when a straight line standing upon another straight line makes the adjacent angles equal to one another, each of them is a right angle; (I. def. 10.) therefore each of the angles AFE, BFE, is a right angle : wherefore... | |
| E. M. Reynolds - Geometry - 1868 - 172 pages
...When an angle stands alone one letter only is often used, as A. When one straight line standing on another straight line makes the adjacent angles equal to one another, each of these angles is called a right angle; and the straight line which stands on the other is said to be... | |
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