 | Robert Simson - 1838 - 434 pagina’s
...the angle AFE is equal (8. lJ to the angle BFE: but when a straight line standing upon another makes the adjacent angles equal to one another, each of them is a right (10 def.) angle: therefore each of the angles AFE, BFE is a right angle ; wherefore the straight line... | |
 | Euclides - 1841 - 378 pagina’s
...the angle BFE: /^~ ^X^ * 3. 1. but when a straight line, standing upon another straight line, makes the adjacent angles e.qual to one another, each of them is a right* angle: therefore each of the angles AFE, BFE is a right angle; wherefore the straight line CD, drawn through... | |
 | Euclides - 1842 - 316 pagina’s
...the angle AFE is equal (8. 1.) to the angle BFE. But when a straight line standing upon another makes the adjacent angles equal to one another, each of them is a right angle (10. Def. 1.) : therefore each of the angles AFE, BFE is a right angle ; wherefore the straight line... | |
 | John Playfair - 1842 - 332 pagina’s
...angle AFE is equal (8. 1.) to the angle BFE. And when- a straight line standing upon another makes the adjacent angles equal to one another, each of them is a right (7. Def. 1.) angle : Therefore each of the angles AFE, BFE is a right angle ; wherefore the straight... | |
 | John Playfair - 1844 - 338 pagina’s
...angle AFE is equal (8. 1.) to the angle BFE. And when a straight line standing upon another makes tho adjacent angles equal to one another, each of them is a right (7. Def. 1.) angle : Therefore each of the angles AFE, BFE is a right angle ; wherefore the straight... | |
 | Euclides - 1845 - 546 pagina’s
...equal to the angle B FE : (i. 8.) but when a straight line standing upon another straight line makes the adjacent angles equal to one another, each of them is a right angle ; (i. def. 10.) therefore each of the angles A FE, BFE, is a right angle : wherefore the straight line... | |
 | Euclid - 1845 - 218 pagina’s
...therefore the angle AFE is equal f to the angle BFE : But when a straight line standing upon another makes the adjacent angles equal to one another, each of them is a right J angle ; therefore each of the angles AFE, BFE is a right angle : wherefore the straight line CD,... | |
 | Euclides - 1846 - 292 pagina’s
...AFE is equal to the angle BFE : But when a straight line, standing upon another straight line, makes the adjacent angles equal to one another, each of them is a right angle ; therefore each of the angles AFE, BFE is a right angle ; and therefore the straight line CD, drawn... | |
 | Euclid, Thomas Tate - 1849 - 120 pagina’s
...the angle AFE is equal (i. 8.) to the angle BFE: But when a straight line standing upon another makes the adjacent angles equal to one another, each of them is a right (i. Def. 10.) angle: Therefore each of the angles AFE, BFE is a right angle; wherefore the straight... | |
 | Euclides - 1852 - 152 pagina’s
...angle CHG; ' and they are adjacent angles; but when a straight line standing on a straight line makes the adjacent angles equal to one another, each of them is a right angle; and the straight line which stands upon the other is called a perpendicular to it; therefore from the given... | |
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... common to the two triangles AFE, BFE, there are two sides in the one equal to two sides in the other, each to each ; and the base EA is equal to the base EB ; (i. 
