| Colin Macfarquhar, George Gleig - Encyclopedias and dictionaries - 1797 - 414 pages
...converfation relate to thefpeaier, the party addrejjed, or a Greet book. In this fentence, " ifay that **the three angles of every triangle are equal to two right angles,"** thejfrcahr is furely not theyú¿№ 142. in converfation, or when a man, in the character of a public... | |
| Alexander Ingram - Trigonometry - 1799 - 374 pages
...THEOR. BOOK Hi. THE oppofite angles of any quadrilateral figure defcribed in a circle, are together **equal to two right angles. Let ABCD be a quadrilateral figure in the circle ABCD ; any two of its** oppofite angles are together equal to two right angles. Join AC, BD ; and becaufe the three angles... | |
| 1818 - 638 pages
...invidious, unless when they are invidiously pursued, would be puerile. No man, when he learns that **the three angles of e•very triangle are equal to two right angles,** ever thought of saying, that the series of comparisons by which that truth is demonstrated was invidious... | |
| Robert Simson - Trigonometry - 1804 - 530 pages
...PROP. XXII. THEOR. THE oppofite angles of any quadrilateral figure defcribed in a circle, are together **equal to two right angles. Let ABCD be a quadrilateral figure in the circle ABCD ; any two of its** oppofite angles are together equal to. two right angles. Join AC, BD ; and becaufe the three angles... | |
| John Playfair, Euclid - Circle-squaring - 1804 - 468 pages
...XXII. T II EO R. THE oppofitc angles of any quadrilateral figure defcribed in a circle, are together **equal to two right angles. Let ABCD be a quadrilateral figure in** jhe circle ABCD ; any two of its oppofite angles are together equal to two right angles. Join AC, BD.... | |
| Robert Simson - Trigonometry - 1806 - 546 pages
...are together equal to two right angles. Let ABCD be a quadrilateral figure in the circle ABCD ; anjr **two of its opposite angles are together equal to two...Join AC, BD ; and because the three angles of every** tri3.32. 1. angle are equal» to two right angles, the three angles of the triangle CAB, viz. the angles... | |
| Euclid - Geometry - 1810 - 554 pages
...PROP. XXII. THEOR. THE opposite angles of any quadrilateral figure described in a circle, are together **equal to two right angles. Let ABCD be a quadrilateral...Join AC, BD; and because the three angles of every** tria 32. 1. angle are equal « to two right angles, the three angles of the triangle CAB, viz. the... | |
| William Hazlitt - Orators - 1810 - 544 pages
...or the Cartesian system : nay, if any such law were made against all those who did not believe that **the three angles of every triangle are equal to two right angles,** I make no doubt but that this plain demonstration would be most violently opposed by great numbers... | |
| Liberalism (Religion) - 1813 - 588 pages
...they concurred in the plain and pre-established propositions that " two and two are four, and that **the three angles of every triangle are equal to two right angles,"** were perfectly correct, and found every thing as it should be; " but, when each left this guide, and... | |
| John Playfair - 1819 - 354 pages
...PROP. XXII. THEOR. The opposite angles of any quadrilateral figure described in a circle, are together **equal to two right angles. Let ABCD be a quadrilateral...are together equal to two right angles. Join AC, BD.** The angle CAB is equal (21. 3.) to the anglo CDB, because they are in the same segment B ADC^and the... | |
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