If three straight lines meet all in one point, and a straight line stand at right angles to each of them in that point; these three straight lines are in one and the same plane. Let the straight line AB stand at right angles to each of the straight lines... Calendar of the McGill University, Montreal - Page 27by McGill University - 1865Full view - About this book
| John Playfair - Mathematics - 1806 - 320 pages
...AF, AD. Therefore, if a straight line, &c. QED 2 SuP" PROP. V. THEOR. r IF three straight lines meet in one point, and a straight line stand at right angles to each of them in that point, these three straight lines are in one and (he same plane. Let the straight line AB stand... | |
| John Playfair - 1819 - 354 pages
...is therefore at right angles to the plane of the lines AF, AD. Therefore, &c. Q, ED PROP. V. THEOR. If three straight lines meet all in one point, and...straight line stand at right angles to each of them in that point : these three straight lines are in one and the same plane. Let the straight line AB... | |
| John Playfair - Circle-squaring - 1819 - 350 pages
...is therefore at right angles to the plane of the lines AF, AD. Therefore, &c. Q, ED PROP. V. THEOR. If three straight lines meet all in one point, and a straight lipie stand at right angles to each of them in that point : these three straight lines are in one and... | |
| Euclid, Robert Simson - Geometry - 1821 - 514 pages
...right angles to the plane in which are AB, CD. Wherefore, if a straight line, ike. QED PROP. V. THEOR. IF three straight lines meet all in one point, and a straight line stands at right angles to each of them in that point; these three straight lines are in one and the... | |
| Peter Nicholson - Mathematics - 1825 - 1046 pages
...riffht angles to the plane in which are AB, CD. Wherefore, if a straight line, &c. QED PROP. V. THEOREM. If three straight lines meet all in one point, and a straight line stands at right angles to each of them in that point ; these three slraiglit lines are in one and the... | |
| Euclid, John Playfair - Euclid's Elements - 1826 - 326 pages
...AB is therefore at right angles to the plane of the lines AF,AD. Therefore, &e. QED PROP, V. THEOR, If three straight lines meet all in one point, and a straight line stand at right angles to eaeh of them in that point: these three straight lines are in one and the same plane. Let the straight... | |
| Robert Simson - Trigonometry - 1827 - 546 pages
...right angles to the plane in which are AB, CD. Wherefore, if a straight line, &c. QED PROP. V. THEOR. If three straight lines meet all in one point, and a straight See N. line stand at right angles to each of them in that point; these three straight lines are in... | |
| Euclid, Robert Simson - Geometry - 1829 - 548 pages
...angles to the plane in which are AB, CD. Wherefore, if a straight line, &c. QED PROP. V. THEOR. IP three straight lines meet all in one point, and a straight line stands at right angles to each of them in that point ; these three straight lines are in one and the... | |
| John Playfair - Euclid's Elements - 1832 - 358 pages
...is therefore at right angles to the plane of the lines AF, AD. Therefore, &c. QED PROP. V. THEOR. Jf three straight lines meet all in one point, and a...straight line stand at right angles to each of them in that point: these three straight lines are in one and the same plane. Let the straight line AB stand... | |
| Euclides - 1834 - 518 pages
...plane in which a. a AB, CD. Wherefore, if a straight line, &c. QED PROPOSITION V. See N. THEOR. — If three straight lines meet all in one point, and...straight line stand at right angles to each of them in that point, these three straight lines are in one and the same plane. Let the straight line AB stand... | |
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