 | Euclides - 1853 - 334 pages
...a plane, which meet together in a point, but are not in the same direction. IX. A plane rectilinear angle is the inclination of two straight lines to one another, which meet together in a point, but are not in the same straight line. OBS. 1 . Unless the contrary be expressly stated,... | |
 | John Drew - 1853 - 386 pages
...SJ Hersehel. PAKT III. PRACTICAL ASTRONOMY. DEFINITIONS. 205. 1. AN ANGLE is the inclination of two lines to one another, which meet together, but are not in the same direction. Since the principal part of Practical Astronomy consists in the right measurement of angles,... | |
 | Euclides - 1855 - 270 pages
...direction.] This definition is put in brackets, as useless, and unnecessary to be remembered. .IX. A plane rectilineal angle is the inclination of two...meet together, but are not in the same straight line. When two straight lines meet at a point, so that if produced they would intersect (cross) each other,... | |
 | William Pease - 1856 - 108 pages
...direction. Plane Angles are either Rectilineal, Curvilineal, or Mixtilineal. 18*. A Plane Eectilineal Angle is the inclination of two straight lines to...meet together, but are not in the same straight line. NB — " When several angles are at one point B, any one of them is expressed by three letters, of... | |
 | Robert Rawson - 1856 - 178 pages
...which meet together but are not in the same direction." IX. A plane rectilineal angle is the \ i» inclination of two straight lines to one another,...meet together, but are not in the same straight line. NB — "When several angles are at one point B, any one of them is expressed by three letters, of which... | |
 | Euclides - 1858 - 248 pages
...line. A plane angle is the opening of two lines from their point of meeting, or of intersection. 9. A plane rectilineal angle is the inclination of two...meet together, but are not in the same straight line. A plane rectilineal angle is the opening of two straight lines from their point of meeting or of intersection,... | |
 | 1858 - 402 pages
...friendship is the concord between, or inclination of, a knave and a fool, or two sharpers, or two fools, to one another, which meet together, but are not in the same straight line, each working for himself. This is the plane rectilineal angle of common life. VII. When one man stands... | |
 | Robert Potts - 1860 - 380 pages
...two lines to each other in a plane, which meet together, but are not in the same straight line. IX. A plane rectilineal angle is the inclination of two...meet together, but are not in the same straight line. NB If there be only one angle at a point, it may be expressed by a letter placed at that point, as... | |
 | John Playfair - 1860 - 334 pages
...which any two points being taken, the straight line between them lies wholly in that superficies. 6. A plane rectilineal angle is the inclination of two...which meet together, but are not in the same straight linn. E NB ' When several angles are at one point B, any one of them is expressed by three letters,... | |
 | Isaac Todhunter - 1860 - 318 pages
...We have first to explain how angles are measured. A plane rectilineal angle is defined by Euclid as the inclination of two straight lines to one another...meet together, but are not in the same straight line. And when a straight line standing on another makes the adjacent angles equal to one another, each of... | |
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A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line. 
