| Elias Loomis - 1849 - 226 pągines
...the 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... | |
| Euclides, Thomas Tate - 1849 - 108 pągines
...equal (i. 8.) to the angle CHG; and they are adjacent angles; but when a straight line standing on a **straight line makes the adjacent angles equal to one another, each of** them is a right angle, and the straight line which stands upon the other is called a perpendicular... | |
| Janet Taylor - 1851 - 621 pągines
...points and quarter-points of the compass, cut off from the circle by the lines which form the angle. **When a straight line standing on another straight...stands on the other is called a perpendicular to it** : thus the line AC is perpendicular to DB, and makes with it the two adjacent angles CAD, CAB, equal... | |
| Ralph Smyth, Sir Henry Edward Landor Thuillier - 1851 - 718 pągines
...another, 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... | |
| Euclides - 1852
...is equal d to the angle CHG; ' and they are adjacent angles; but when a straight line standing on a **straight line makes the adjacent angles equal to one another, each of** them is a right angle; and the straight line which stands upon the other is called a perpendicular... | |
| Euclides - 1853
...CG; therefore (I. 8.) 3. The angle CHF is equal to the angle CHG; and they are adjacent angles; but **when a straight line standing on another straight...the adjacent angles equal to one another, each of** them is a right angle, and the straight line which stands upon the other is called a perpendicular... | |
| Euclides - 1853 - 147 pągines
...the angle c hf is equal (i. 8) to the angle chg ; and they are adjacent angles ; but when (10 def.) **a straight line standing on another straight line...the adjacent angles equal to one another, each of** them is a right angle ; and the straight line which stands upon the other is called a perpendicular... | |
| Royal Military Academy, Woolwich - 1853
...equal (8. i.) to the angle CHG ; and they are adjacent angles ; but when a straight line standing on a **straight line makes the adjacent angles equal to one another, each of** them is a right angle ; and the straight line which stands upon the other is called a perpendicular... | |
| William Somerville Orr - 1854
...straight line (AB) standing on another straight line (CD) makes the adjacent angles (А В С, А В D) **equal to one another, each of the angles is called a right angle ; and the straight** lines are said to be perpendicular to each other. Thus the two lines, AB, CD, are perpendicular to... | |
| Euclides - 1855
...is put in inverted commas, as being Dr. Simson's addition ; it is very necessary to be remembered. X **When a straight line standing on another straight...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... | |
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