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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. "
Elements of Geometry: Containing the First Six Books of Euclid, with a ... - Σελίδα 17
των Euclid, John Playfair - 1853 - 317 σελίδες
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The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

Robert Simson - 1762 - 466 σελίδες
...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....

Instructions Given in the Drawing School Established by the Dublin Society ...

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...

The Elements of Euclid, Viz: The Errors, by which Theon, Or Others, Have ...

Robert Simson - 1775 - 520 σελίδες
...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,...

The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

Robert Simson - 1781 - 466 σελίδες
...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...

The First Six Books: Together with the Eleventh and Twelfth

Euclid - 1781 - 520 σελίδες
...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...

Elements of Geometry;: Containing the First Six Books of Euclid, with Two ...

John Playfair - 1795 - 400 σελίδες
...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...

The Elements of Euclid: Viz. the First Six Books, with the Eleventh and ...

Alexander Ingram - 1799 - 351 σελίδες
...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...

Elements of Geometry;: Containing the First Six Books of Euclid, with a ...

Euclid, John Playfair - 1804 - 440 σελίδες
...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...

The Elements of Euclid: Also the Book of Euclid's Data ...cor. viz. The ...

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....

Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - 1806 - 311 σελίδες
...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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