 | Adrien Marie Legendre - Geometry - 1828 - 346 pages
...itself be that perpendicular, which divides AB into two equal parts at the point C. PROBLEM. 1 33. At a given point, in a given straight line, to erect a perpen. dicular to this line. Let A be the given point, and BC the given line. Take the points B and... | |
 | Adrien Marie Legendre - Geometry - 1836 - 394 pages
...itself b& that perpendicular, which divides AB into two equal parts at the point C. e -A. » PROBLEM II. At a given point, in a given straight line, to erect a perpendicular to this line. Let A be the given point, and EC the •xUD given line. • /:s Take the... | |
 | Charles Davies - Geometrical drawing - 1840 - 262 pages
...contains, however, all the scales necessary for laying down lines and angles. These are. the scale of equal parts, the diagonal scale of equal parts,...scale of chords, all of which have been described. Practical Geometry.—Problems. PROBLEM VIII. To bisect a given straight line: that is, to divide it... | |
 | Charles Davies - Geometrical drawing - 1840 - 264 pages
...by the line IE: the point D where it intersects AB, will be the middle of the line AB. PROBLEM IX. At a given point in a given straight line, to erect a perpendicular to the line. 17. Let A be the given point, and BC the given line. From A lay off any... | |
 | Charles Davies - Navigation - 1841 - 414 pages
...contains, however, all the scales necessary for laying down lines and angles. These are, the ecale of equal parts, the diagonal scale of equal parts,...of which have been described. SOLUTION OF PROBLEMS. n ,Jx /s SOLUTION OF PROBLEMS REQUIRING THE USE OF THE INSTRUMENTS THAT HAVE BEEN DESCRIBED. PROBLEM... | |
 | Charles Davies - Navigation - 1835 - 388 pages
...PROBLEMS. SOLUT1ON OF PROBLEMS REQU1R1NO THE USE OF THE 1NSTRUMENTS THAT HAVE BEEN DESCR1BED. PROBLEM 1. At a given point in a given straight line, to erect a perpendicular to the line. 27. Let A be the given point, and BC the given line. From A lay off any... | |
 | Charles DAVIES (LL.D.) - Geometrical drawing - 1844 - 262 pages
...contains, however, all the scales necessary for laying down lines and angles. These are. the scale of equal parts, the diagonal scale of equal parts,...scale of chords, all of which have been described. Practical Geometry. — Problems. PROBLEM VIII. To bisect a given straight line: that is, to divide... | |
 | Charles Davies - Navigation - 1846 - 386 pages
...contains, however, all the scales necessary for laying down lines and angles. These are, the scale of equal parts, the diagonal scale of equal parts,...a given point in a given straight line, to erect a perpendicular to the line. 21. Let A be the given point, and BC the given line. From A lay off any... | |
 | Charles Davies - Geometrical drawing - 1846 - 254 pages
...lines and angles. These are, the Scale of Equal Parts, the Diagonal Scale of Equal BOOK II. SECTION I. Parts, and the Scale of Chords, all of which have been described. 25. How do you bisect a given straight line ; that is, divide it into two equal parts ? Let AB be the... | |
 | Charles Davies - Trigonometry - 1849 - 372 pages
...E, draw the line DE: it will bisect the line AB in C. Let AB be the given straight line. PROBLEM II. At a given point, in a given straight line, to erect a perpendicur lor to this line. Let A be the given point, and BC the given line. Take the points B and... | |
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This is a scale of two feet in length, on the faces of which a variety of scales are marked. The face on which the divisions of inches are made, contains, however, all the scales necessary for laying down lines and angles. These are, the scale of equal... 
