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" The angles which one straight line makes with another upon one tide of it, are either two right angles, or are together equal to two right angles. Let the straight line AB make with CD, upon one side of it the angles CBA, ABD ; these are either two right... "
The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ... - Page 21
by Euclid, Robert Simson - 1821 - 516 pages
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Instructions Given in the Drawing School Established by the Dublin Society ...

Joseph Fenn - Mathematics - 1769 - 536 pages
...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 a▀raight line meeting I. Either each of У ACE, ECB, is a L.. AB in the...
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The Elements of Euclid, Viz: The Errors, by which Theon, Or Others, Have ...

Robert Simson - Trigonometry - 1775 - 534 pages
...was to 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,...
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Elements of Geometry;: Containing the First Six Books of Euclid, with Two ...

Euclid, John Playfair - Euclid's Elements - 1795 - 462 pages
...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 two iight...
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The Elements of Euclid: Viz. the First Six Books, with the Eleventh and ...

Alexander Ingram - Trigonometry - 1799 - 374 pages
...line AB make with CD, upon one- fide of it, the a 5.Poft. b i0. i. BooK I. 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 .Ax. Dfy y* ^^ *1> f* n \j U 3a \f a Dcf....
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Elements of Geometry;: Containing the First Six Books of Euclid, with a ...

John Playfair, Euclid - Circle-squaring - 1804 - 468 pages
...Def. *• 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 two right...
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The Elements of Euclid: Also the Book of Euclid's Data ...cor. viz. The ...

Robert Simson - Trigonometry - 1804 - 530 pages
...to be done. PROP. XIII. THEO R. THE angles which one ftraight line makes with another upon one fide of it, are either two right angles, or are together equal to two right angles. Poft Let the ftraight line AB make with CD, upon one fide of it* the angles CBA, ABD ; thefe are either...
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - Mathematics - 1806 - 320 pages
...Which was to be done. PROP. XIII. THEOR. THE angles which qne straight line makes with another upon one side of it, are either two right angles, or are...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 Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclides - 1816 - 588 pages
...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;...
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Elements of Geometry: Containing the First Six Books of Euclid: With a ...

John Playfair - 1819 - 354 pages
...Which ivas to be 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...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 rf right angle (Def. 7.)...
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - Circle-squaring - 1819 - 350 pages
...right angles. Let the straight line AB make witK CD, upon one side of it, the angles CBA, ABD ; these 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 right angle (Def. 7.) ; but, if not, from...
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