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" When you have proved that the three angles of every triangle are equal to two right angles... "
A Royal Road to Geometry: Or, an Easy and Familiar Introduction to the ... - Page 118
by Thomas Malton - 1774 - 440 pages
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Life and Remains of the Rev. R. H. Quick

Robert Hebert Quick - Teachers - 1899 - 564 pages
...We wish to recall that proposition. Arbitrary association of ideas immediately suggests the words, 'The three angles of every triangle are equal to two right angles.' But at first these are words only : our mind runs along an established train of sounds. By well-formed,...
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Spinoza; a Handbook to the Ethics

James Allanson Picton - Ethics - 1907 - 282 pages
...from are always verifiable. The skilled surveyor's measurements by triangulation assume always that the three angles of every triangle are equal to two right angles. And any one who wantsvefification can have it, either roughly and imperfectly by the use of instruments...
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An Outline of Logic

Boyd Henry Bode - Philosophy - 1910 - 348 pages
...predicate. ' William Pitt was a great statesman ' = ' There was a great1 statesman named William Pitt '; ' The three angles of every triangle are equal to two right angles ' = ' There are figures known as triangles with their three angles equal to two right angles '; ' All...
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Mind, Volume 23

Electronic journals - 1914 - 662 pages
...for such a proposition as " My first penitent was a murderer " seems to be offered as adequate for " The three angles of every triangle are equal to two right angles ". Granting for the sake of argument that the first proposition really means that the same individual...
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How We Learn: A Short Primer of Scientific Method for Boys

William Henry Samuel Jones - Reasoning - 1916 - 82 pages
...up. Nothing is taken on trust ; every step is understood and commands our intellectual assent. That the three angles of every triangle are equal to two right angles is a proposition which cannot be denied by anyone who has assented to the definitions and axioms which...
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The Elements of Non-Euclidean Plane Geometry and Trigonometry

Horatio Scott Carslaw - Geometry - 1916 - 193 pages
...geometry holds only on the assumption that the Constant is infinite. Only in this case is it true that the three angles of every triangle are equal to two right angles ; and this can easily be proved, as soon as we admit that the Constant is infinite." This document...
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The New Tinsmith's Helper and Pattern Book: A Textbook and Working Guide for ...

Hall V. Williams - Tinsmithing - 1917 - 382 pages
...its defect from a right angle. 2. The supplement of an angle is its defect from two right angles. 3. 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. 4. The sum of the...
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The New Tinsmith's Helper and Pattern Book: A Textbook and Working Guide for ...

Hall V. Williams - Tinsmithing - 1920 - 378 pages
...its defect from a right angle. 2. The supplement of an angle is its defect from two right angles. 3. 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. 4. The sum of the...
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The Philosophical Writings of Descartes: Volume 2

René Descartes - Philosophy - 1984 - 444 pages
...cannot divide it, at least in our thought). And because of these facts it can be truly asserted that the three angles of every triangle are equal to two right angles and that every body is divisible. Fifthly, \ ask my readers to spend a great deal of time and effort...
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Descartes: Selected Philosophical Writings

René Descartes - Philosophy - 1988 - 276 pages
...cannot divide it, at least in our thought). And because of these facts it can be truly asserted that the three angles of every triangle are equal to two right angles and that every body is divisible. Fifthly, I ask my readers to spend a great deal of time and effort...
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