 | E. M. Reynolds - 1868 - 172 páginas
...placed between the other two. When an angle stands alone one letter only is often used, as A. When one straight line standing on another straight line makes...and the straight line which stands on the other is said to be perpendicular to it. We acquire a clear idea of'the magnitude of an angle by supposing it... | |
 | Robert Potts - 1868 - 434 páginas
...15.) therefore the angle FHC is equal to the angle GHC; (I. 8.) and these 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... | |
 | Isaac Todhunter - 1869 - 312 páginas
...statement that a certain angle is three times another angle, or four times another angle ; and so on. 8. When a straight line standing on another straight...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 - 1870 - 270 páginas
...360th part of the circumference of a circle, and consequently varies with the size of the circle. 10. When a straight line standing on another straight line makes the adjacent angles equal to each other, each of these angles is called a right angle; and the straight line which stands on the... | |
 | Alfred Hiley - 1871 - 184 páginas
...sides AB, AC, but upon the extent or opening between the lines. XI. When a straight line standing upon another straight line makes the adjacent angles equal to one another, each of them is called a right A angle ; and the straight line standing upon the other is called a perpendicular... | |
 | Elias Loomis - 1871 - 302 páginas
...the angle ECD is the difiei ence 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... | |
 | Hippolyte Taine - 1871 - 606 páginas
...each of them perpendicular to a third line, denoting by the name perpendicular the straight line which standing on another straight line makes the adjacent angles equal to one another ; it is from this construction that all the properties of parallels must be deduced. — Now, what... | |
 | William Alexander Myers - 1873 - 238 páginas
...lines if produced would form two concentric circles ; *that is, having a common center, as at F. 14. When a straight line standing on another straight...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... | |
 | Henry Major - 1873 - 588 páginas
...line. An angle is named from three or one letters, as ABC or B. X. When a straight line standing oil 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... | |
 | Euclid, Isaac Todhunter - 1883 - 428 páginas
...one angle at a point, it may be expressed by a letter placed at that point; as the angle at E. 10. When a straight line standing on another straight...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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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. 
