| Robert Simson - 1762 - 466 sider
...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
...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 - 520 sider
...t. Book I. 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.** For, if the angle CBA be equal to ABD, each of them is a. A A i. Ax. a Def. to. r;ght » angle ; but,... | |
| John Playfair - 1795 - 400 sider
...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 - 351 sider
...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... | |
| Robert Simson - 1804
...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 - 1804 - 440 sider
...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... | |
| Euclides - 1816 - 528 sider
...I.. Let the straight line AB make with CD, upon one side v-*"V-' of it, the angles CBA> ABD : these **are either two right angles, or are together equal to two right angles.** • * For if the angle CB A be equal to ABD, each of them is a % A ' E DB D B C 1 Def. 10. right4 angle;... | |
| John Playfair - 1819 - 333 sider
...done. PROP. XIII. THEOR. The angles which one 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 witK CD, upon one side of it, the angles CBA, ABD ; these are either... | |
| Euclides - 1821
...former (per 8th ) PROP. 13, THEOR. WTten a right line standing upon another makes angles with it, they **are either two right angles or are together equal to two right angles,** If the right line standing on the other be perpendicular to it, the angles are both right ; if not,... | |
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