Crawshaw, Fred D. (Fred Duane), b. 1874, Phillips, J. D. (James David), 1869- joint author · Chicago, New York, Scott, Foresman and company · leaf 326
Fig. 364. To Trisect a Eight Angle with the Triangle Second Method. An angle may be divided into any numberof equal parts by drawing an arc such as A C in Problems 3and 4 and stepping off equal distances on the arc, with thedividers. … Fig. 365. To Construct a Square PROBLEM 5 Given: The length of the side of a square, AB.Required: To construct the square. Fig. 365. 322 MECHANICAL DRAWING Instructions: First Method. Draw arc B D C with AB as aradius. Bisect arc BDC (Problem 1). AD is now at rightangles to AB. With centers at D…
Mechanical drawing
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