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Libros Libros 51 - 60 de 120 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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A Treatise of Mathematical Instruments, including most of the instruments ...

John Fry Heather - 1849 - 183 páginas
...to the two angles H i A and '-A HA i ; and because the vertical angles A v H and iv E are equal, and that the three angles of every triangle are equal to two right angles, therefore the two angles VIE and s EH are, together, equal to the two angles AH v and HA i, and therefore...
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Compendium of Dr. Brown's Philosophy of the Human Mind

Thomas Brown, James Parkinson Boyle - 1849 - 352 páginas
...circumstance. If then we can only enunciate, but not conceive, a general proposition, we can never be certain that the three angles of every triangle are equal to two right angles, until it has been demonstrated of triangles of every variety of figure ; and before this can be done,...
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The Complete Works of John M. Mason, Volumen4

John Mitchell Mason - 1849
...certainty. In mathematical reasoning, our knowledge is greater than our ignorance. When you have proved that the three angles of every triangle are equal to two right angles, there is an end of doubt; because there are no materials for ignorance to work up into phantoms ; but...
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Baptism: With Reference to Its Import and Modes

Edward Beecher - 1849 - 342 páginas
...has not a head for the philosophy of language : and I say this with as little bad feeling as I say that the three angles of every triangle are equal to two right angles." This is certainly an illustrious specimen of genuine Attic Salt. Dr. Carson, no doubt, has monopolized...
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Elements of Geometry and Conic Sections

Elias Loomis - 1849 - 226 páginas
...part of four right angles (Prop. II., Sch. 1), or the third part of two right angles. Also, because the three angles of every triangle are equal to two right angles, the two angles OAB, OBA are together equal to two thirds of two jj^—^C right angles; and since AO...
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The theory of reasoning

Samuel Bailey - 1851
...or that the three angles of the triangle before me are together equal to two right angles, because the three angles of every triangle are equal to two right angles. The dictum, then, is obviously one of those selfevident maxims which we have above described, and it...
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The popular educator

Popular educator - 1852
...The reason of this construction is plain, .. ~~r from Prop. XXXII., Book I., Euclid, which asserts that the three angles of every triangle are equal to two right angles; and from Prop. XIII., Book I., which asserts that the anglet which one straight line mates with anoiJier...
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The Wesleyan methodist association magazine

1853
...there would be no moral discipline in believing religious truths, any more than there is in believing that the three angles of every triangle are equal to two right angles, or any other proposition in Euclid. And in making our spiritual life one of faith, God has acted in harmony...
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The artillerist's manual, and compendium of infantry exercise

Frederick Augustus Griffiths - 1854
...radii, its sides become the sines of the opposite angles, or the cosines of the adjacent angles. 5. The three angles of every triangle are equal to two right angles ; hence the oblique angles of a right-angled triangle are each other-s complements. 6. The sum of the...
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Elements of geometry and mensuration

Thomas Lund - 1854 - 362 páginas
...join OE; and let OE, or OE c produced meet the circumference in F. Then AOE is a triangle; and since the three angles of every triangle are equal to two right angles, and one of them in this case, viz. t OAE is a right angle, .'. each of the other two angles, tOEA,...
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