 | William Schofield Binns - 1861 - 238 pages
...s (8) OUique or inclined lines are straight lines which are neither horizontal nor vertical, as (9) A plane rectilineal angle is the inclination of two straight lines to one another, meeting or cutting each other in a point, as c (10) " When a straight line standing on another straight... | |
 | S. M. Saxby - Nautical astronomy - 1861 - 140 pages
...same direction." And (Book I. def. 9), " A plane rectilineal angle is the inclination of two right (or straight) lines to one another, which meet together, but are not in the same right line ;" so that, in the following figure the right Fig. 11. line AB meets the right line AC at... | |
 | Euclides - 1862 - 140 pages
...of two lines to one another in a plane, which meet together, but are not in the same direction. 9. A plane rectilineal angle is the inclination of two...meet together, but are not in the same straight line. 10. When a straight line standing on another straight line, makes the adjacent angles equal to one... | |
 | Euclides - 1862 - 172 pages
...plane, which meet together, but are not in the same direction.' IX. A plane rectilineal angle is A the 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... | |
 | Thomas Percy Hudson - Trigonometry - 1862 - 202 pages
...astronomer. 2. Extension of the definition of an angle. Euclid defines a plane rectilineal angle to be the inclination of two straight lines to one another,...meet together but are not in the same straight line. He does not in his definition take into account the direction in which this inclination is supposed... | |
 | Euclides - 1863 - 122 pages
...of two lines to one another in a plane, which meet together, but are not in the same direction. IX. A plane rectilineal angle is the inclination of two...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 - 1863 - 74 pages
...that point being the vertex. 9. A plane rectilineal angle (reclus, straight, and linen, a thread), is the inclination of two straight lines to one another,...together, but are not in the same straight line., The magnitude of the angle is altigeth'er independent of the length of the lines ,<- angle . B is,... | |
 | Euclides - 1864 - 448 pages
...of two lines to each other in a plane, which meet together, but are not in the same direction. IX. A plane rectilineal angle is the inclination of two...meet together, but are not in the same straight line. I) NB If there be only one angle at a point, it may be expressed by a letter placed at that point,... | |
 | Euclides - 1865 - 402 pages
...of two lines to one another in a. plane, which meet together, but are not in the same direction. IX. A plane rectilineal angle is the inclination of two...meet together, but are not in the same straight line. An acute angle is that which is less than a right _ angle. XIII. A term or boundary is the extremity... | |
 | Robert Potts - 1865 - 528 pages
...of two lines to each other in a plane, which meet together, but are not in the same direction. IX. A plane rectilineal angle is the inclination of two...lines to one another, which meet together, but are not iii the same straight line. D XB If there be only one angle at a point, it may be expressed by a letter... | |
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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. 
