 | Robert Simson - Trigonometry - 1827 - 513 pages
...of any quadrilateral .figure inscribed in a circle, are together equal to two right angles. 1 20. 3. Let ABCD be a quadrilateral figure in the circle ABCD; any two of its opposite angles shall together be equal to two right angles. Join AC, BD : and because the three angles of every •32.1.... | |
 | Isaac Taylor - Bible - 1827 - 322 pages
...more readily and by a simpler and more compact process than that of the other. If it were denied that the three angles of every triangle are equal to two right angles, an actual measurement of lines, or the placing of two pieces of card one over the other, would end... | |
 | Isaac Taylor - Bible - 1827 - 256 pages
...more readily and by a simpler and more compact process than that of the other. If it were denied that the three angles of every triangle are equal to two right angles, an actual measurement of lines, or the placing of two pieces of card one over the other, would end... | |
 | Peter Nicholson - Masonry - 1828 - 272 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... | |
 | 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 ;... | |
 | 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... | |
 | 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... | |
 | 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... | |
 | 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 ;... | |
 | John Playfair - Euclid's Elements - 1833 - 333 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 figure in the circle A BCD ; any two of its opposite angles are toge'ther equal to two right angles. Join AC, BD. The angle... | |
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The opposite angles of any quadrilateral figure described in a circle, are toe/ether equal to two right angles. Let ABCD be a quadrilateral figure in the circle ABCD : any two of its opposite angles are together equal to two right angles. 
