 | William Grier - 1832 - 366 σελίδες
...triangular piece of wood, a, b, c, flat, and about the same thickness as the ruler: the sides ab and In: are equal to one another, and form a right angle at...with the given line to which the parallel is to be drawn.then, keeping the triangle steady, lay the ruler on the paper, with its edge applied to either... | |
 | William Grier - 1836 - 380 σελίδες
...as the ruler : the sides ab and be of which are equal to one another, and form a right angle at 5. For the convenience of sliding, there is usually a...its edge applied to either of the other sides of the triiti angle ; then, keeping the ruler firm, move the triangle along its edge, up or down, to the given... | |
 | William Grier - 1839 - 324 σελίδες
...which the common Gunter's scale may be substituted ; and, secondly, a triangular piece of wood, o, b, c, flat, and about the same thickness as the ruler...on the paper so that one of its sides will coincide frith the given line to which the parallel is to be drawn ; then, keeping the triangle steady, lay... | |
 | Charles William Hackley - 1847 - 248 σελίδες
...into degrees, called a protractor. 13. Make an angle equal to the sum of several given angles. 14. Draw a line through a given point parallel to a given line. 15. Draw through given points several parallels to a given line. * A straight line joining two points... | |
 | Daniel Adams - 1849 - 142 σελίδες
...their order from left to right, and the scale will be completed. f 35. Geometrical Problems. PROBLEM I. To draw a line through a given point parallel to a given line. IT 33. Topic. A problem. Solving a problem. Practical Geometry. IT 34. Topic. Instruments necessary... | |
 | Daniel Adams - 1850 - 144 σελίδες
...1123456789 | . . T ....... T "T .- I i ii 1 1 n 1 1 """ II __J!j f 35. Geometrical Problems. PROBLEM L To draw a line through a given point parallel to a given line. IF 33. Topic. A problem. Solving a problem. Practical Geometry. 36 GEOMETRICAL PROBLEMS. Let AS be... | |
 | William Grier - 1853 - 360 σελίδες
...common Gunter•s scale may be substituted; and, secondly, a triangular piece of wood, a, b, c, fiat, and about the same thickness as the ruler : the sides...coincide with the given line to which the parallel is to he drawn ; then, keeping the triangle steady, lay the ruler on the paper, with its edge applied to... | |
 | Euclides - 1858 - 248 σελίδες
...are equal to one another. CONSTRUCTION. — Pst. 2. A st. line may be produced indefinitely. P. 31. To draw a line through a given point parallel to a given line. Def. A. A parallelogram is a four-sided figure of which the opposite sides are parallel, and the diagonal... | |
 | William Schofield Binns - 1861 - 238 σελίδες
...right-angled triangle cmn, making mn equal to n' x; me is the distance between the lines. PROBLEM 22. To draw a line through a given point parallel to a given plane, but to have a given inclination. There is a limit to the inclination of the required line ;... | |
 | Eli Todd Tappan - 1864 - 288 σελίδες
...The straight line joining A and F is perpendicular to DE. Let the student show why. 174. Problem. — To draw a line through a given point parallel to a given line. Let a perpendicular fall from the point on the line. Then, at the given point, erect a perpendicular... | |
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For the convenience of sliding, there is usually a hole in the middle of the triangle, as may be seen in the figure. 30. By means of these simple instruments many very useful geometrical problems may be performed. Thus, to draw a line through a given... 
