 | John Radford Young - Euclid's Elements - 1827 - 246 pages
...an angle is very vague, and can convey but an indistinct notion of angular magnitude ; he calls it " the inclination of two straight lines to one another,...together, but are not in the same straight line." To understand this definition, it is necessary previously to know what is meant by " the inclination... | |
 | Euclid, Dionysius Lardner - Euclid's Elements - 1828 - 542 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 equal,... | |
 | Thomas Curtis - Aeronautics - 1829 - 814 pages
...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 one another,which meet together, but are not in the same straight line. Fig.2. Note. When several angles... | |
 | John Playfair - Euclid's Elements - 1832 - 358 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...lines to one another, which meet together, but are notin the same straightline. • The definitions marked with inverted commas are different from those... | |
 | Euclid - 1835 - 540 pages
...to one See N. " 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. Book I. -CE NB ' Wheir several angles are at one point B, any one of them is expressed by three letters,... | |
 | Mathematics - 1836 - 488 pages
...being taken, the straight line between them lies wholly in that superficies. 6. A plane rectilinial angle is the inclination of two straight lines to...meet together but are not in the same straight line. 7. When a straight line standing on another straight line makes the adjacent angles equal to one another,... | |
 | Andrew Bell - Euclid's Elements - 1837 - 290 pages
...which any two points being taken, the straight line between them lies wholly in that superficies. 9. A plane rectilineal angle is the inclination of two...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, of which the... | |
 | Edward Tagart - Logic - 1837 - 156 pages
...Stewart's Philosophy, vol. ii. pp. 158, 160. Take for example the ninth and eleventh definitions. " A plane rectilineal angle is the inclination of two...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 can it be said... | |
 | S. E. Parker - Logic - 1837 - 344 pages
...impart. When we, on first opening the pages of Euclid, read, " a line is length without breadth ;" " a plane rectilineal angle is the inclination of two straight lines to one another that meet in a point ;" " that a triangle is a plane figure bounded by three lines," Ac. ; from hence... | |
 | John Playfair - Euclid's Elements - 1837 - 332 pages
...meeting of the other lines than straight lines. A plane angle is said to be "the inclination of two lines to one another which " meet together, but are not in the same direction." This definition is omitted here, because that the angles formed by the meeting of curve... | |
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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. 
