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... An elementary course of mathematics - Page 9by Samuel Hunter Christie - 1847Full view - About this book
| Robert Simson - Trigonometry - 1762 - 488 pages
...in one and the fame plane. Let the ftraight line AB ftand at right angles to rrch of th<* ftraight **lines BC, BD, BE, in B the point where they meet; BC, BD; BE are in one and the** fanta. plane. If not, let, if it be poffible, BD and BE be in one phiie, and BO b3e above it ; and... | |
| Robert Simson - Trigonometry - 1781 - 534 pages
...are in one and the fame plane. Let the ftraight line AB itnnd at right angles to each of the ftraight **lines BC, BD, BE, in B the point where they meet; BC, BD, BE are in one** an.i the fame plane. If not, let, if it be poilible, BD and BE be in one plane, and BC be above it... | |
| Alexander Ingram - Trigonometry - 1799 - 374 pages
...are in one and the fame plane. Let the ftraight line AB Hand at right angles to each of the ftraight **lines BC, BD, BE, in B the point where they meet ; BC, BD, BE are in one and the** fame plane. If not, let, if it be poffible, BD and BE be in one plane, and BooK XI. BC be above it;... | |
| Robert Simson - Trigonometry - 1804 - 530 pages
...are in one and the fame plane. Let the ftraight line AB fland at right angles to each of the ftraight **lines BC, BD, BE, in B the point where they meet; BC, BD, BE are in one and the** fame plane. If not, let, if it be poffible, BD and BE be in one plane, and BC be above it ; and let... | |
| Robert Simson - Trigonometry - 1806 - 546 pages
...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...the same plane. If not, let, if it be possible, BD** und BE be in one plane, and BC be above it ; and let a plane pass through AH, BC, the common section... | |
| John Playfair - Mathematics - 1806 - 320 pages
...are in one and (he same plane. Let the straight line AB stand at right angles to each of the three **straight lines BC, BD, BE, in B, the point where they...it be possible, BD and BE be in one plane, and BC** above it ; and let a plane pass through AB, BC ; then the common section of this plane with the plane... | |
| Euclid - Geometry - 1810 - 554 pages
...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...BC, BD, BE are in one and the same plane. If not,** leti if it be possible; B!) and BE be in one plane, and BC be above it; and let a plane pass through... | |
| Euclides - 1814 - 560 pages
...point; these three straight lines are in one and the same plane. Let the straight line AB stand «t **right angles to each of the straight lines BC, BD,...point where they meet; BC, BD, BE, are in one and the** s;ime planer If not, let, if it be possible, BD and BE be in one plane, and BC be above it ; and let... | |
| John Playfair - 1819 - 354 pages
...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...BD, BE are in one and the same plane. If not, let** BD and BE, if possible, be in one plnne, and BC be above it ; and let a plane pass through AB, BC,... | |
| John Playfair - Circle-squaring - 1819 - 350 pages
...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...meet ; BC, BD, BE are in one and the same plane. If** aot, let BD and BE, if possible, be in one plane, and BC be above it ; and let a plane pass through... | |
| |