| Stewart W. and co - 1884
...named from three or one letters, as ABC or B. X. 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... | |
| John Thornton - 1888 - 248 sider
...the following definition of a right angle : — ' 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... | |
| Edward Mann Langley, W. Seys Phillips - 1890 - 515 sider
...instead of it. See Note 2 on Prop. 9. DEF. 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 said to be perpendicular,... | |
| Henry Sinclair Hall, Frederick Haller Stevens - 1900 - 304 sider
...are also vertically opposite to one another. 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... | |
| Euclid - 1904 - 456 sider
...are also vertically opposite to one another. 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... | |
| Joseph H. Rose - 1906 - 309 sider
...same straight line as in Fig. 1. Fig. 1. Fig. 2. 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... | |
| Charles Westinghouse - 1906 - 157 sider
...are not in the same straight line as in Fig. 34. 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... | |
| Calvin Franklin Swingle - 1906
...same straight line as in Fig. 34. Fi(. 34. Fig 35. 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... | |
| Euclid - 1908
...the angle ECF; [i. 8] and they are adjacent angles. But, when a straight line set up on a straight **line makes the adjacent angles equal to one another, each of the equal** ingles is right ; [Def. 10] therefore each of the angles DCF> FCE is right. Therefore the straight... | |
| David Eugene Smith - 1911 - 339 sider
...confine our attention to having the concept understood. 10. When a straight line set up on a straight **line makes the adjacent angles equal to one another, each of the equal angles is** right, and the straight line standing on the other is called a perpendicular to that on which it stands.... | |
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