| Robert Simson - Trigonometry - 1775 - 520 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 - 550 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... | |
| John Playfair - Trigonometry - 1795 - 444 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 - 351 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 - Euclid's Elements - 1806 - 320 pages
...the straight line between them lies wholly in that superficies. VI. A plane rectilineal angle is the **inclination of two straight lines to one another,...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 - 518 pages
...plane, which meet together, but are not in the same " direction." IX. A plane rectilineal angle is the **inclination of two straight lines' to one another,...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,... | |
| Edward Augustus Kendall - 1811 - 466 pages
...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... | |
| 1811 - 566 pages
...definition of Euclid's first Book, in which it is affirmed that ' a plane rectilineal angle is the **inclination of two straight lines to one another,...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 - Encyclopedias and dictionaries - 1811 - 962 pages
...into plane, spherical, and solid. Angle, a plane, rectilineal, is the inclination of two •traight **lines to one another, which meet together, but are not in the same straight line.** See Fig. 6. Angle, spherical, is an angle formed on the surfac* of a sphere by the intersection of... | |
| |