| Euclides - 1874
...cmgle ADG is equal to the angle GDB (I. 8), but when a straight line standing upon another straight **line makes the adjacent angles equal to one another, each of the angles is** a right angle (I. Def. 10) ; therefore 2. The angle GDB is a right angle ; but FDB is likewise a right... | |
| WILLIAM ALEXANDER MYERS - 1874
...circles ; that is, having a common center, as at F. 14. When a straight line standing on another straight **line makes the adjacent angles equal to one another, each of the angles is** a right angle, and the straight line which stands on the other is called a perpendicular to it; IKL... | |
| Robert Potts - 1876 - 403 sider
...angle ADG is equal to the angle GDB : (i. 8.) but when a straight line standing upon another straight **line makes the adjacent angles equal to one another, each of the angles is** a right angle; (i. def. 10.) therefore the angle GDB is a right angle : but FDB is likewise a right... | |
| Edward Atkins - 1876 - 119 sider
...is equal to tho angle BDG (I. 8). .•_. But when a straight line, standing on another straight ~z **line, makes the adjacent angles equal to one another, each of the angles** ia called a right angle (I. Def. 10). Suppose G the centre. Therefore the angle GDB is a right angle.... | |
| Isaac Todhunter - 1877 - 440 sider
...into a more precise form in the following manner : when a straight line standing on another straight **line makes the adjacent angles equal to one another,...each of the angles is called a right angle, and the** straight line which stands on the other is called a perpendicular to it. A Thus in the figure if the... | |
| Edward Atkins - 1877
...angle ECP (I. 8) ; And they are adjacent angles. But when a straight line, standing on another straight **line, makes the adjacent angles equal to one another, each of the angles is called a. right angle** (Dcf. 10); Hake CK = CD ami A DF.F cquihiteiul. '. DCF = '! F.Cf. 20 I>CF, f are Make i AI!E» L £1!A.... | |
| Euclides, James Hamblin Smith - 1878 - 349 sider
...straight line (as AB) meeting another straight line (as CD) makes the adjacent ^ angles (ABC and ABD) **equal to one another, each of the angles is called a RIGHT ANGLE ; and** each line is said to be a PERPENDICULAR to the other. X. An OBTUSE ANGLE is one which is greater than... | |
| Moffatt and Paige - 1879
...one letter at that point, as the angle at E. 10. When a straight line standing on another straight **line makes the adjacent angles equal to one another,...each of the angles is called a right angle; and the** straight line which stands on the other is called a perpendicular to it. n. An obtuse angle is that... | |
| T S. Taylor - 1880
...DEFINITION OF RIGHT ANGLES. JTigr.J. Euc. Def. io.) — When a straight line, .standing on another straight **line, makes the adjacent angles equal to one another,...each of the angles is called a right angle. And the** straight line •which stands on the other is -A. -0 .* said to be perpendicular to it. Thus the straight... | |
| Isaac Todhunter - 1880 - 400 sider
...angle A FE is equal to the angle BFE. [I. 8. But when a straight line, standing on another straight **line, makes the adjacent angles equal to one another, each of the angles is called a right angle** ; [I. Definition 10. therefore each of the angles A FE, BFE is a right angle. Therefore the straight... | |
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