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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... "
The Mechanic's Calculator: Comprehending Principles, Rules, and Tables in ... - Page 69
by William Grier - 1836 - 344 pages
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The Mechanic's Calculator, Or Workman's Memorial Book ...

William Grier - Mechanical engineering - 1832 - 366 pages
...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...
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The Mechanic's Calculator; Comprehending Principles, Rules, and Tables in ...

William Grier - Mechanical engineering - 1836 - 380 pages
...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...
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The Mechanic's Calculator: Comprehending Principles, Rules, and Tables in ...

William Grier - Mechanical engineering - 1839 - 324 pages
...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...
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Elementary Course of Geometry ...

Charles William Hackley - Geometry - 1847 - 248 pages
...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...
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Mensuration, Mechanical Powers and Machinery: The Principles of Mensuration ...

Daniel Adams - Arithmetic - 1849 - 142 pages
...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...
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Mensuration, Mechanical Powers, and Machinery: The Principles of Mensuration ...

Daniel Adams - Measurement - 1850 - 144 pages
...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...
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The Mechanics Calculator: Comprehending Principles, Rules, and Tables in the ...

William Grier - Mechanical engineering - 1853 - 360 pages
...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...
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Gradations in Euclid : books i. and ii., with an explanatory preface [&c ...

Euclides - 1858 - 248 pages
...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...
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A course of geometrical drawing

William Schofield Binns - 1861 - 206 pages
...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 ;...
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Treatise on Plane and Solid Geometry: For Colleges, Schools and Private ...

Eli Todd Tappan - Geometry, Modern - 1864 - 288 pages
...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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