 | Architecture - 1863 - 300 pages
...pustulate and an axiom? Of what use are they in the demonstrations? 2. Proposition 11. Problem — Draw a straight line at right angles to a given straight line from a given point in the same. 3. Describe an isosceles triangle, the base and one of its sides being given. 4. Proposition... | |
 | Euclides - 1864 - 448 pages
...Wherefore the straight line AB is divided into two equal parts in the point DQEF PROPOSITION XI. PROBLEM. To draw a straight line at right angles to a given straight line, from a given point in the same. Let AB be the given straight line, and C a given point in it. It is required to draw a straight... | |
 | Robert Potts - 1865 - 528 pages
..."Wherefore the straight line AB is divided into two equal parts in the point DQEF PROPOSITION XL PROBLEM. To draw a straight line at right angles to a given straight line, from a given point in the same. Let AB be the given straight line, and C a given point in it. It is required to draw a straight... | |
 | Euclides - 1865 - 402 pages
...Wherefore the straight line AB is divided into two equal parts in the point J>. QEF PROP. XI — PROBLEM. To draw a straight line at right angles to a given straight line, from a given point in the same. (References — Prop. I. 1, 3, 8 ; ax. 1 ; def. 10.) Let AB be the given straight line, and... | |
 | John Robertson (LL.D., of Upton Park sch.) - Examinations - 1865 - 106 pages
...to each other, the sides which are opposite to the equal angles are equal to each other. [ECS] 42. Draw a straight line at right angles to a given straight line from a given point in the same, and thence show that two straight lines cannot have a common segment. [ECS] 43. If the side... | |
 | John Playfair - Geometry - 1855 - 350 pages
...1.) DB, and the straight line AB is divided into two equal parts in the point D. D PROP. XI. PROB. To draw a straight line at right angles to a given straight line, from « gtwm point in that line. Let AB be a given straight line, and C a point given in it ; it is requiiecl... | |
 | Euclid, Isaac Todhunter - Euclid's Elements - 1867 - 426 pages
...the given straight line AB is divided into two equal partt at the point DQEF PROPOSITION 11. PROBLEM. To draw a straight line at right angles to a given straight line, from a given point in the same. Let AB be the given straight line, and C the given point in it : it is required to draw from... | |
 | Robert Potts - 1868 - 434 pages
...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... | |
 | James Maurice Wilson - Geometry - 1868 - 132 pages
...base AO = the base BO: that is 0 is the point of bisection of AB. PROBLEM 3. To draw a perpendicular to a given straight line from a given point in it. , Let AB be the given line, C the given point in it. Construction. With centre C and .. j ~ any radius describe a circle... | |
 | Isaac Todhunter - Measurement - 1869 - 312 pages
...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...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 FD and FE may be equal. Fold a string,... | |
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To draw a straight line at right angles to a given straight line, from a given point in the same. 
