 | Euclid, Isaac Todhunter - 1867 - 424 pàgines
...Wherefore the given straight line AB it divided into two equal parts at the point DQEF PROPOSITION 11. PROBLEM. To draw a straight line at right angles to a given itraight line, from a given point in the same. Let AB be the given straight line, and C the given point... | |
 | Robert Potts - 1868 - 434 pàgines
...triangles A CD, BCD; the two sides AC, CD are equal to the two BC, CD, each to each ; PROPOSITION XI. PROBLEM. To draw a straight line at right angles to a given straight line, from a given point in the tame. Let AB be the given straight line, and Ca given point in it. It is required to draw a straight... | |
 | Richard Wormell - 1868 - 286 pàgines
...be parallel. F' Through a given point to draw a straight line parallel to a given straight line. 95. Let AB be the given straight line, and C the given point (fig. 81); from the point C drop the perpendicular CA upon AB, and upon CA at the point C raise the... | |
 | Isaac Todhunter - 1869 - 312 pàgines
...take care that the end of the string is properly placed at E. 401. To determine the situation of the straight line at right angles to a given straight line from a given point in it. Let AB be the given straight line, and F the given point in it. Take D and E points in AB, so that... | |
 | Richard Wormell - 1870 - 304 pàgines
...will be parallel. Through a given point to draw a straight line parallel to a given straight line. 95. Let AB be the given straight line, and C the given point (fig. 81); from the point C drop the perpendicular CA upon AB, and upon CA at the point C raise the... | |
 | Euclides - 1871 - 136 pàgines
...may be one-third of the line, which is made up of the whole and the part produced. PROPOSITION XI. PROBLEM. To draw a straight line at right angles to...given straight line from a given point in the same. A. -D 0 X JJ Let AB be the given st. line, and C a given pt. in it. It is required to draw from C a... | |
 | Henry William Watson - 1871 - 320 pàgines
...straight line of indefinite length to draw a straight line perpendicular to the given straight line. Let AB be the given straight line, and C the given point without it. It is required to draw from C a straight line perpendicular to AB. Fig- I0- Take some point... | |
 | Euclides, James Hamblin Smith - 1872 - 376 pàgines
...may be one.third of the line, which is made up of the whole and the part produced. PROPOSITION XI. PROBLEM. To draw a straight line at right angles to...from a given point in the same. Let AB be the given st. line, and Ca. given pt. in it. It is required to draw from C a st. line _L to AB. Take any pt.... | |
 | Euclid, Charles Peter Mason - 1872 - 216 pàgines
...therefore, be equal to it. In other words, AB has been divided at D into two equal parts. PBOPOSITION XI. To draw a straight line at right angles * to a given straight line from a given point in the same. To make the construction we must be able, — 1. To join two given points by a straight line. (Post.... | |
 | Henry Major - 1873 - 588 pàgines
...AD is equal to DB, and the straight line AB is divided into two equal parts in the point D. XI. — To draw a straight line at right angles to a given...the same. Let AB be the given straight line, and C a point given in it ; it is required to draw a straight line from the point C at right angles to AB.... | |
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To draw a straight line at right angles to a given straight line, from a given point in the same. 
