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Libros Libros 11 - 20 de 110 sobre When you have proved that the three angles of every triangle are equal to two right...
" When you have proved that the three angles of every triangle are equal to two right angles... "
Spirit and mind polarity, or The disentanglement of ideas - Página 2
por Arthur Young - 1873
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The elements of Euclid: with dissertations intended to assist and ..., Volumen1

James Williamson - 1781
...oppofite angles of it are equal to two right angles. Let AC, BD be joined. And becaufe (by 32. i.) the three angles of every triangle are equal to two right angles; CAB, ABC, BCA the three angles of the triangle ABC are equal to two right angles : but CAB is equal...
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The philosophical and mathematical commentaries of Proclus ... on the first ...

Proclus (Diadochus.), Marinus (of Naples.) - 1789
...equal to two right. And thus much may fuflice concerning converfe theorems. But as we have difcovered that the three angles of every triangle are equal to two right, we ought to determine « certain method, by which we may find how many angles, of all other multangles,...
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Encyclopædia britannica: or, A dictionary of arts ..., Volumen8,Parte1

Colin Macfarquhar, George Gleig - 1797
...that 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...
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The Elements of Euclid: Viz. the First Six Books, with the Eleventh and ...

Alexander Ingram - 1799 - 351 páginas
...; any two of its oppofite angles are together equal to two right angles. Join AC, BD ; and becaufe the three angles of every triangle are equal * to two right angles, the three angles of the a 3». i. triangle CAB, viz. the angles CAB, ABC, BCA are equal to two right...
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The Edinburgh Review: Or Critical Journal, Volumen30

Sydney Smith, Lord Francis Jeffrey Jeffrey, Macvey Napier, William Empson, Sir George Cornewall Lewis, Henry Reeve, Arthur Ralph Douglas Elliot (Hon.), Harold Cox - 1818
...comparisons are 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...
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The Elements of Euclid: Also the Book of Euclid's Data ...cor. viz. The ...

Robert Simson - 1804
...; any two of its oppofite angles are together equal to. two right angles. Join AC, BD ; and becaufe the three angles of every triangle are equal » to two right angles, the three angles of the triangle CAB, viz. the angles CAB, ABC, BCA are equal to two right angles....
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The Eloquence of the British Senate: Being a Selection of the Best ..., Volumen1

William Hazlitt - 1810
...Aristotelian 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...
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The Freethinking Christians' magazine

1813
...while 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...
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - 1819 - 333 páginas
...triangles, the four oblique angles of whJrh are equal to the three angles of the triangle, therefore the three angles of every triangle are equal to two right angles. Q, ED Though this method of treating the subject is strictly demonstrative, ;yet, as the reasoning...
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A Treatise on the Elements of Algebra

Bewick Bridge - 1821 - 227 páginas
...180°. Thus, if the angle ACF is 40° 25' 35", its supplement FCB will be 139° 34' 25".* 6. The * Since the three angles of every triangle are equal to two right angles, or to 180°, it is evident that in a right-angled triangle the two acute angles must be together equal...
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