## The American House Carpenters' and Joiners' Assistant: Being a New and Easy System of Lines, Founded on Geometrical Principles, for Cutting Every Description of Joints, and for Framing the Most Difficult Roofs; to which is Added a Complete Treatise on Mathematical Instruments. Also, Mensuration, Tables of the Weights and Cohesive Strength of the Several Materials Used in the Construction of Buildings, &c |

### From inside the book

Results 1-5 of 41

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**perpendicular**, or tangential . 9. Parallel lines , Figs . 7 and 8 , are always at the same**perpendicular**distance , and , if produced , would never meet . 10. Oblique lines , Fig . 9 , change their distance , and would meet , if ... Page 6

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**perpendicular**to another . When the angles on each side are equal to one another , they are right angles , Fig . 11 . 16. An oblique angle , is that which is made by two oblique lines , and is either less or greater than a right angle ... Page 7

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**perpendicular**to each other . A quarter of the circumference is sometimes called a quadrant . The height , or altitude of a figure is a**perpendicular**let fall from an angle , Fig . 11 , or its vertex to its base , or opposite side . In ... Page 9

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**perpendicular**, to a given line from a point in the same . From the point c take any two equal distances as CB , CA ...**perpendicular**. 9 Figure 4 . To erect a**perpendicular**from the extremity PROBLEMS. ... Page 10

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**perpendicular**from the extremity of a given line . Let A B be the given straight line , and в the point from which to erect the**perpendicular**. Take any point any point as c , with CB as a radius , and describe the arc DBE ; produce the ...### Other editions - View all

### Common terms and phrases

26 Spruce St angle rib beam beam compasses bevel breadth Cast Iron circle circumference colatitude constructed copy cube root cubic feet depth describe the arc diagonal diameter divided draw the lines edge Eighths elevation ellipsis extent will reach Figure floor frame girders given line given number gnomonic projection half hypothenuse inches instrument Invented and Drawn jack-rafters Join joists length in feet limb line of chords line of numbers line of sines Lith 26 Spruce meridian method of finding multiplied nail number of degrees number of equal pencil perpendicular plane Plate polygon primary divisions proportional purlin quadrant quarter girt quotient radius regular polygons represent right angles right line roof rule Rule.-Multiply screw secants sector Shows the method slider sliding soffit square root straight line stroke subdivision tangents thickness transverse distance triangle truss vernier scale weight