| John Playfair - 1855 - 350 páginas
...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 straight lines to** on* another, which meet together, but are not in the same straight line. NB ' When several angles are... | |
| Euclid, Isaac Todhunter - 1867 - 426 páginas
...but are not in the same direction. 9. A plane rectilineal angle is the inclination of two Btraight **lines to one another, which meet together, but are not in the same straight line.** Note. When several angles are at ene point B, any one of them is expressed by three letters, of which... | |
| Septimus Tebay - 1868 - 115 páginas
...in which any two points being taken, the straight line between them lies wholly in that superficies. **7. A plane rectilineal angle is the inclination of...meet together, but are not in the same straight line.** TM 1 f. Thus, the angle at A is contained by the two straight lines AB, AC ; and is called the angle... | |
| Robert Potts - 1868 - 410 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.** g, NB If there be only one angle at a point, it may be expressed by a letter placed at that point,... | |
| Isaac Todhunter - 1869 - 312 páginas
...book ; in the first Three Sections we shall only consider lines and figures on a plane surface. 4. An **angle is the inclination of two straight lines to...another which meet together, but are not in the same** Thus the two straight lines AO, BO, which meet at O, form an angle there. The angle is not altered... | |
| Euclides - 1870
...of meeting, or of intersection. 9. A plane rectilineal angle (rectus, straight, and linea, a thread) **is the inclination of two straight lines to one another,...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,... | |
| Alfred Hiley - 1871
...as in the case of a circle ; but it cannot be contained within fewer than three straight lines. X. **A plane rectilineal angle is the inclination of two...meet together, but are not in the same straight line.** Thus the two straight lines CA and BA, meeting together at the point A, make the angle BAG, or, as... | |
| 1871
...attended with the least difficulty y BO great is the privilege of genius. Even Euclid's definition, that ' **a plane rectilineal angle is the inclination of two straight lines to one another?** \ is criticised by that clear-headed and acute thinker, Professor Leslie. But if Professor Smith had... | |
| William Alexander Myers - 1873 - 164 páginas
...of two lines to one another in a plane which meet together, but are not in the same direction. 22. **A plane rectilineal angle is the inclination of two...meet together, but are not in the same straight line.** 23. A THEOREM is a truth requiring demonstration. 24. An AXIOM is a self-evident truth. 25. A PROBLEM... | |
| Henry Major - 1873
...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 angle is named from three or one letters, as ABC or B. X. When a straight line standing oil another... | |
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