 | Colin Arrott R. Browning - 1884 - 274 σελίδες
...angle is expressed by three letters, the middle letter is that which stands at the angular point. (4) When a straight line standing on another straight line makes the adjacent angles equal, each of them is called a Right Angle ; and the straight line standing on the other is called a Perpendicular,... | |
 | Stewart W. and co - 1884 - 272 σελίδες
...the angle CHF is equal to 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... | |
 | 1885 - 150 σελίδες
...to one another." This again is capable of proof. The definition of a right angle is as follows : " 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... | |
 | W. J. C. Miller - 1885 - 154 σελίδες
...to one another." This again is capable of proof. The definition of a right angle is as follows : ' ' 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... | |
 | Joseph Ray - 1885 - 358 σελίδες
...stands on another so that it makes with it two equal angles, each of Right angle. Hisht these angles is a RIGHT ANGLE; and the straight line which stands on the other is said to be PERPENDICULAR to it, or at RIGHT ANGLES to it. A/ obt«se /Acute 3. An OBTUSE ANGLE is greater... | |
 | Euclides - 1885 - 340 σελίδες
...adjacent angles at both sides of itself equal, each of the angles is called a right angle, and the line which stands on the other is called a perpendicular to it. Hence a right angle is equal to its supplement. xv. An acute angle is one which is less than a right... | |
 | Euclid, John Casey - 1885 - 340 σελίδες
...adjacent angles at both sides of itself equal, each of the angles is called a right angle, and the line which stands on the other is called a perpendicular to it. D Hence a right angle is equal to its supplement. xv. An acute angle is one which is less than a right... | |
 | John Thornton - 1888 - 266 σελίδες
...290. The Measurement of Angles. — Euclid gives the following definition of a right angle : — ' When a straight line standing on another straight...stands on the other is called a perpendicular to it.' We find it convenient for the purposes of angular measurement to divide the right angle into smaller... | |
 | George William Usill - 1889 - 306 σελίδες
...When an angle is simply spoken of, a plane rectilineal angle is always meant. 4. Perpendicular, — 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 lines are said to be perpendicular to each other.... | |
 | George Frederick Chambers - 1890 - 602 σελίδες
...lines to each other in the same plane gives rise to a plant rectilineal angle, or simply on angle. When a straight line, standing on another straight line, makes the adjacent angles equal to each other, each of those angles is called a right angle ; but if the adjacent angles are not equal... | |
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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. 
