| Robert Simson - Trigonometry - 1827 - 513 pages
...are " not in the same direction." IX. 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. NB ' When several angles are at one point B, any ' one of them is expressed by... | |
| Euclid, Dionysius Lardner - Euclid's Elements - 1828 - 324 pages
...the Elements, as being useless. (10) IX. A plane rectilinear angle is the inclination of two right **lines to one another, which meet together, but are not in the** same right line. (11) X. When a right line standing on another right line makes the adjacent angles... | |
| Euclid, Robert Simson - Geometry - 1835 - 513 pages
...are not in " the same direction." IX. 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. Book I. -CE NB ' Wheir several angles are at one point B, any one of them is expressed... | |
| Jeremiah Day - Mathematics - 1836 - 472 pages
...them lies wholly in that superficies. 6. A plane rectilinial angle is the inclination of two straight **lines to one another, which meet together but are not in the** same straight line. 7. When a straight line standing on another straight line makes the adjacent angles... | |
| Andrew Bell - Euclid's Elements - 1837 - 240 pages
...them lies wholly in that superficies. 9. 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. When several angles are at one point B, any one of them is expressed by three letters,... | |
| Edward Tagart - Logic - 1837 - 135 pages
...the ninth and eleventh definitions. " 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." " An obtuse angle is that which is greater than a right angle." With what propriety... | |
| Euclides - 1841
...are " not in the same direction." IX. 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. A NB ' When several angles aro at one point B, any ' one of them is expressed by... | |
| John Playfair - Euclid's Elements - 1842 - 317 pages
...them lies wholly in that superficies. 6. 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. E B NB 'When several angles are at one point B, any one of them is ex' pressed... | |
| William Pease - Geometry - 1843 - 68 pages
...Rectilineal, Curvilineal, or Mixtilineal. IX. 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. NB ' When several angles are at one point B, any ' one of them is expressed by... | |
| Robert Potts - 1845
...are not in the same straight line. IX. 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. D b C NB When several angles are at one point II, either of them is expressed by... | |
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