 | Elias Loomis - 1849 - 252 σελίδες
...angle ECD is the difference between the two angles BCD, BCE. 10. When a straight line, meeting another straight line, makes the adjacent angles equal to one another, each of them is called a right angle, and the straight line which meets the other is called a perpendicular to it.... | |
 | Euclid, Thomas Tate - 1849 - 120 σελίδες
...by a letter placed at that point; as the ;ingle at E." ' 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... | |
 | Sir Henry Edward Landor Thuillier - 1851 - 826 σελίδες
...which meet together, but are not in the same straight line.* When a straight line standing upon another straight line makes the adjacent angles equal to one another, each of them is called a right angle, and the straight line which stands upon the other is called a perpendicular to... | |
 | Janet Taylor - 1851 - 674 σελίδες
...cut off 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 - 48 σελίδες
...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 to... | |
 | Euclides - 1852 - 152 σελίδες
...fall 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... | |
 | Euclides - 1853 - 176 σελίδες
...therefore the angle adg is equal (i. 8) to the angle gd b' 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 f db is likewise... | |
 | Euclides - 1853 - 146 σελίδες
...(I. 8.) 1. The angle ADG is equal 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 2. The angle GDB is a right angle: but FDB is... | |
 | Royal Military Academy, Woolwich - 1853 - 400 σελίδες
...by a letter placed 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... | |
 | Euclides - 1855 - 270 σελίδες
...Therefore the angle ADG is equal (I. 8) to the angle GD B. But when a straight line standing upon another straight line makes the adjacent angles equal to one another, each of these angles is a right angle (I. Def. 10). Therefore the angle GDB is a right angle. But FDB is likewise... | |
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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. 
