 | Robert Simson - 1762 - 488 pagina’s
...Book!. Let the ftraight line AB make with CD, upon one fide of it, the Vxv^ angles CBA, ABP ; thefe are either two right angles, or are together equal to two right angles. a. Def. 10. For if the angle CBA be equal to ABD, each of them is a right ^ E ri Ax. di Ax. B B angle.... | |
 | Joseph Fenn - 1769 - 536 pagina’s
...PROPOSITION XIII. THEOREM FI. HF angles which one ftraight line FC makes with another AB upon pre fide of it, are either two right angles, or are together equal to two right angles. Hypothefis. Thefis. EC is aßraight line meeting I. Either each of У ACE, ECB, is a L.. AB in the... | |
 | Robert Simson - 1775 - 534 pagina’s
...be done. PROP. XIII. THEO R. angles which one ftraight line makes with another upon one ftde of it, are either two right angles, or are together equal to two right angles h 3. Port, c lo. t. - Def. t. Book I. Let the ftraight line AB make with CD, upon one fide, of it,... | |
 | Robert Simson - 1781 - 534 pagina’s
...Pod: Book I. Let the ftraight line AB make with CD, upon one fide of if, 1 the angles CBA, ABD ; thefe are either two right angles, or are together equal...angle CBA be equal to ABD, each of them is a right* AE a. Def. i0. DBG bni angle. but if not, from thepoint B draw BE at right anglesbto CD. therefore... | |
 | Euclid - 1781 - 552 pagina’s
...Let the ftraight line AB make with CD, upon one fide of it, the angles CBA, ABD ; thefe are cither two right angles, or are together equal to two right...if the angle CBA be equal to ABD, each of them is a A D B i def. i0. r;j,ht a angle; but, if not, from the point B draw BE at right b it. t. angles b to... | |
 | Euclid, John Playfair - 1795 - 462 pagina’s
...PROP. XIII. THEO R. THE angles which one ftraight line makes with. another upon the one fide of it, arc either two right angles, or are together equal to two right angles. . Let the ftraight line AB make with CD, Upo-1 one fide of ui the angles CBA, ABD ; thefe ar. euher... | |
 | Alexander Ingram - 1799 - 374 pagina’s
...done. PROP. XIII. THEOR. THE angles which one ftraight line makes with another upon the one fide of it, are either two right angles, or are together equal to two right angles. Let the flraight line AB make with CD, upon one- fide of it, the a 5.Poft. b i0. i. BooK I. the angles... | |
 | John Playfair, Euclid - 1804 - 468 pagina’s
...PROB. XIII. THEO R. THE angles which one ftraight line makes with another upon the one fide of" it, are either two right angles, or are together equal to two right angles. Let the ftraight line AB make with CD, upon one fide of it, the angles CBA, ABD ; thefe are either... | |
 | Robert Simson - 1804 - 530 pagina’s
...angles. Poft Let the ftraight line AB make with CD, upon one fide of it* the angles CBA, ABD ; thefe are either two right angles, or are together equal to two right angles. a. Def. 10. For if the angle CBA be equal to ABD, each of them is a right • AE b. it. I. c. 2. Ax.... | |
 | John Playfair - 1806 - 320 pagina’s
...straight line makes with another upon one side of it, are either two right angles, or are together equal to two right angles. Let the straight line AB make...it, the angles CBA, ABD ; these are either two right or are together equal to two right angles. C Book I. * Def. 7. b 11. 1. " c 2.' Ax. d 1. Ax. For, if... | |
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The angles which one straight line makes with another upon one side of i't, are either two right angles, or are together eqval to two right angles. 
