 | Euclides - 1842 - 316 sider
...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...one point, are together equal to four right angles. PROP. XIV. THEOR. straight lines shall be in one and the same straight line. At the point в in the... | |
 | John Playfair - 1842 - 332 sider
...together equal to four right angles. CO-R. 2. And hence, all the angles made by any number of straight lines meeting in one point, are together equal to four right angles. PROP. XVI. THEOR. If one side of a triangle be produced, the exterior angle is greater than either... | |
 | Euclid, James Thomson - 1845 - 382 sider
...at their point of intersection, are together equal to four right angles. Cor. 2. And consequently, that all the angles made by any number of lines meeting...one point, are together equal to four right angles. PROP. XIV. THEOB. — If, at a point in a straight line, two other straight lines on the opposite sides... | |
 | Euclid - 1845 - 218 sider
...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...one point, are together equal to four right angles. PROPOSITION XVI. THEOR. — If one side of a triangle be produced, the exterior angle is greater than... | |
 | Euclides - 1845 - 546 sider
...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...one point, are together equal to four right angles. PROPOSITION XVI. THEOREM. If one side of a triangle be produced, the exterior angle is greater than... | |
 | Euclides - 1846 - 292 sider
...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...one point, are together equal to four right angles. PROP. XVI. THEOR. If one side of a triangle be produced, the exterior angle is greater than either... | |
 | Euclid, John Playfair - 1846 - 334 sider
...together equal to four right angles. COR. 2. And hence, all the angles made by any number of straight lines meeting- in one point, are together equal to four right angles. PROP. XVI. THEOR. If one side of a triangle be produced, the exterior angle is greater than either... | |
 | Euclides - 1848 - 52 sider
...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...one point, are together equal to four right angles. PROP. XVI. THEOREM. If one side of a triangle be produced, the exterior angle is greater than either... | |
 | Euclid, Thomas Tate - 1849 - 120 sider
...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...one point, are together equal to four right angles. PROP. XVI. THEOR. If one side of a triangle be produced, the exterior angle is greater than either... | |
 | Elias Loomis - 1849 - 252 sider
...Therefore, if two straight lines, &c. Cor. 2. Hence, all the angles made by any number of straight lines meeting in one point, are together equal to four right angles. Cor. 1. Hence, if two straight lines cut one another, the four angles formed at the point of intersection,... | |
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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. 
