| Robert Simson - Trigonometry - 1775 - 534 pages
...are not in the fame " direction." IX. A plane rectilineal angle is the inclination of two ftraight **lines to one another, which meet together, but are not in the** fame ftraight line. « NB Book I. B CE ' NB When feveral angles are at one point B, any one ' of them... | |
| Euclid - 1781 - 552 pages
...are not in the fame " direction." IX. A plane rectilineal angle is- the inclination of two ftraight **lines to one another, which meet together, but are not in the** fame ftraight line. NB Book I. A! D CE * NB When fevcral angles are at one point B, any one of them... | |
| Euclid - Euclid's Elements - 1789 - 296 pages
...ftill a fuperfluous condition. He defines a rectilineal angle, to be " the inclination of two ftraight **lines to one another, which meet together, but are not in the** fame ftraight line ." Now their not being in the fame ftraight line, is a neceflfary confequence, obvioufly... | |
| Euclid, John Playfair - Euclid's Elements - 1795 - 462 pages
...the meeting of other lines than ftraight lines. A pl»ne angle is faid to be ' the inclination of two **lines to one another which meet together, but are not in the** feme direftion.' This definition is omitted here, becaufe that the angles formed by the meeting of... | |
| Alexander Ingram - Trigonometry - 1799 - 374 pages
...in that fupeificies. VIII. Omitted. IX. A plane reftilineal angle is the inclination of two ftraight **lines to one another, which meet together, but are not in the** fame ftraight line. B NB BooK T. ' NB When feveral angles are at one point B, any one * of them is... | |
| John Playfair - Mathematics - 1806 - 320 pages
...which any two points being taken, the straight line between them lies wholly in that superficies. VI. **A plane rectilineal angle is the inclination of two...meet together, but are not in the same straight line.** A NB ' When several angles are at one point B, any one ' of them is expressed by three letters, of... | |
| Robert Simson - Trigonometry - 1806 - 546 pages
...to one another See N. " 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.** B B C NB c When several angles are at one point B, any one of < them is expressed by three letters,... | |
| Isaac Dalby - Mathematics - 1807 - 476 pages
...two points being taken, the right line between them lies wholly ia that plane or superficies. 8. A **rectilineal angle is the inclination of two straight lines to one another, which meet** in a point called the angular point, as the angle C. C \ An angle is usually denoted by three letters,... | |
| 1811 - 566 pages
...a right line, contrary to the 9th definition of Euclid's first Book, in which it is affirmed that ' **a plane rectilineal angle is the inclination of two...together, but are not in the same straight line.'** Book IV. relates to the construction of polygons, their inscrptkm in, and circumscription about, circles.... | |
| Edward Augustus Kendall - 1811 - 462 pages
...most general division of angles is, into plane, spherical, and solid. Angle, a plane, rectilineal, **is the inclination of two straight lines to one another,...meet together, but are not in the same straight line.** See Fig. 6. Angle, spherical, is an angle formed on the surface of a sphere by the intersection of... | |
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