 | Robert Simson - Trigonometry - 1762 - 488 pages
...therefore if two ftraight lines, &c. Q^ED CoR. T. From this it is manifeft that if two ftraight lines cnt one another, the angles they make at the point where...they cut, are together equal to four right angles. CoR. 2. And confequently that all the angles made by any number of lines meeting in one point, are... | |
 | Euclid - 1781 - 552 pages
...Therefore, if two Itraight lines, &c. QED CoR. r. From this it is manifeft, that, if two ftraight lines cut one another, the angles they make at the point where they cut, arc together equal to four right angles. CoR. 2. And confequently that all the angles made by any number... | |
 | Alexander Ingram - Trigonometry - 1799 - 374 pages
...two ftraight lines, See. Q.. ED CoR. i. From this it is manifeft, that, if two- ftraight lines cut one another, the angles they make at the point where...they cut, are together equal to four right angles. CoR. 2. And confequrntly, that all the angles made by any number of lines meeting in one point, are... | |
 | Robert Simson - Trigonometry - 1804 - 530 pages
...two ftraight lines, &c. Q^ ED CoR. i. From this it is manifeft that if two ftraight lines cut •ne another, the angles they make at the point where they cut, are together equal to four right angles. CoR. 2. Ağd confequentiy that all the angles made by any number of lines meeting in one point, are... | |
 | Euclides - 1816 - 588 pages
...Therefore} if two -straight lines, &c. QED COR. 1. From this it is manifest, that, if two straight lines cut one another, the angles they make at the point where...they cut, are together equal to four right angles. COR; 2. And consequently that all the angles made by any number of lines meeting m one point, are together... | |
 | Daniel Cresswell - Geometry - 1816 - 352 pages
...(44.) COR. 3. Hence, if two arches of circles cut one another, in a sphere's surface, the angles which they make, at the point where they cut, are, together, equal to four right angles (Art. 42.) PROP. I. (45.) Theorem. All the straight lines which touch any number of great circles,... | |
 | Peter Nicholson - Mathematics - 1825 - 1046 pages
...if two straight lines, &c. QED Сок. 1. From this it is manifest that, if two straight lines cut one another, the angles they make at the point where...they cut, are together equal to four right angles. Сок. 2. And consequently that all the angles made by any number of lines meeting in one point, are... | |
 | Robert Simson - Trigonometry - 1827 - 546 pages
...QED COB. 1. From this it is manifest, that, if two straight lines cut one another, the angles which they make at the point where they cut, are together equal to four right angles. COR. 2. And consequently that all the angles made by any number of lines meeting in one point, are... | |
 | Euclides - 1834 - 518 pages
...QED COR. 1. From this it is manifest, that if two straight lines cut one another, the angles which they make at the point where they cut, are together equal to four right angles. COu. 2. And consequently, that all the angles made by any number of lines meeting in one point, are... | |
 | Euclid - 1835 - 540 pages
...QED COR. 1. From this it is manifest, that if two straight lines cut one another, the angles which they make at the point where they cut, are together equal to four right angles. COR. 2. And consequently that all the angles made by any number of straight lines meeting in one point,... | |
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Cor. 2. And consequently that all the angles made by any number of lines meeting in one point, are together equal to four right angles. 
