| John Playfair - Geometry - 1836 - 148 pages
...equal. Which was to be proved. COR. I. If two straight lines cut one another, the four angles" which **they make at the point where they cut, are together equal to four right angles.** COR. II. All the angles made by any number of straight lines, which meet in one point, are together... | |
| Robert Simson - Geometry - 1838 - 434 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 in one point, are... | |
| Euclides - 1838 - 264 pages
...n. COR. 1. From th'is 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 - Geometry - 1841 - 378 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.** PROP. XVI. THEOR. If one ride of a triangle be produced, the exterior angle is greater than either... | |
| Euclides - 1842 - 316 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 lines meeting in one point, are... | |
| Euclid - Geometry - 1845 - 218 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 in one point, are... | |
| Euclides - 1845 - 546 pages
...QED COR. 1. From this it is manifest, that, if two straight lines cut each other, 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 - 1846 - 292 pages
...Wherefore, If two straight lines Stc. 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 in one point,... | |
| Euclides - 1848 - 52 pages
...ELEMENTS. 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.** COB. 2. And consequently, that all the angles made by any number of lines meeting in one point, are... | |
| Euclid, Thomas Tate - 1849 - 120 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 in one point, are... | |
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