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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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A popular and practical treatise on masonry and stone-cutting

Peter Nicholson - Masonry - 1828 - 276 pages
...straight lines AF and BD, and consequently making the angle at G equal to the A angle FAC ; and since the three angles of every triangle are equal to two right angles, and since the angles FAC, CAB, BAE, are also equal to two right angles, and since FAC is equal to the...
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Elements of Geometry Upon the Inductive Method: To which is Added an ...

James Hayward - Geometry - 1829 - 228 pages
...and parallel; and the figure will be a parallelogram. 62. As two adjacent angles of a parallelogram are equal to two right angles, the sum of all the angles is equal to four right angles. And if one of the angles of a parallelogram is a right angle, they will...
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The Evidences of Christianity in Their External Or Historical Division ...

Charles Pettit McIlvaine - Apologetics - 1832 - 534 pages
...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 phantasms ;...
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The Writings of the Late John M. Mason, D.D.: Consisting of Sermons, Essays ...

John Mitchell Mason - Theology - 1832 - 458 pages
...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 ;...
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Methodist Magazine and Quarterly Review, Volume 3; Volume 14

Methodist Church - 1832 - 510 pages
...There are some, of which we can say that we know them ; others, that we believe them. We know that the three angles of every triangle are equal to two right angles. We do not doubt that there is such a country as England, and that such a king as Henry VIII. formerly...
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Operative Masonry: Or, A Theoretical and Practical Treatise of Building ...

Edward Shaw - Architecture - 1832 - 244 pages
...straight lines AF and BD, and consequently making the angle at G equal to the angle FAC ; and since the three angles of every triangle are equal to two right angles, and since the angles FAC, CAB, BAE, are also equal to two right angles, and since FAC is equal to the...
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The Evidences of Christianity in Their External Or Historical Division ...

Charles Pettit McIlvaine - Apologetics - 1832 - 534 pages
...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 phantasms; but...
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The Evidences of Christianity in Their External Or Historical Division ...

Charles Pettit McIlvaine - Apologetics - 1832 - 534 pages
...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 phantasms; but...
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Standard Works, Volumes 1-20

1835 - 612 pages
...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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Elements of Geometry: Containing the First Six Books of Euclid : with a ...

John Playfair - Euclid's Elements - 1837 - 332 pages
...triangles, the four oblique angles of which are equal to the three angles of the triangle, therefore the three angles of every triangle are equal to two right angles. ing the Elements. It proceeds, like that of the French Geometer, by demonstrating, in the first place,...
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