| William Schofield Binns - 1861
...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 - 1861 - 112 páginas
...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 páginas
...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
...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 - 1862 - 184 páginas
...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
...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
...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 páginas
...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 páginas
...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... | |
| Edward Clarke Lowe - 1866
...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 another,... | |
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