| John Playfair - 1842 - 317 sider
...angle ADG is equal (8. 1.) to the angle GDB : 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 (7. def. 1.) Therefore the angle GDB is a right angle: But FDB is likewise... | |
| William Pease - 1843 - 68 sider
...the intersection of two of its great circles. 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... | |
| Euclid - 1845 - 199 sider
...ADGisequalJ to the angle GDB : but ~ ^J£^.." t i. .. 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 ||; therefore I! 10. Def the angle GDB is a right angle : But FDB is likewise... | |
| Scottish school-book assoc - 1845
...called simply the »ngle at E, PLANE GEOMETRY. 9. 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 strnight line which stands on the other is called a perpendicular... | |
| Euclides - 1845
...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... | |
| Euclid, John Playfair - 1846 - 317 sider
...placed at that point ; as the ' angle at £.' 7. 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, Thomas Tate - 1849 - 108 sider
...angle ADG is equal (i. 8.) to the angle GDB: 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 FOB is likewise... | |
| Janet Taylor - 1851 - 621 sider
...from the circle by the lines which form the 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... | |
| Euclides - 1852
...letter ; as, the angle A or by three letters as, FAG. A 4 11. When a right line standing upon another **right line makes the adjacent angles equal to one another, each of** them is called a right angle ; and the right line which stands upon the other is called a perpendicular... | |
| Euclides - 1852
...nearer to AC or EF than BA does.] B 2 BOOK I. BOOK I. 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... | |
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