Sullivan, Christine [Gordon]. [from old catalog] · New York, Cincinnati [etc.] American book company · leaf 28
diameter by draw-ing half circles on both sides of the diameter (Fig. 35). Those abovethe line have one center, and those below the line another center onthe same line. LESSON IX. EXERCISE WITH RULER AND COMPASSES. — C^^/r/wa^d/. Exercise 6. — Draw a three-inch square, ABCD (Fig. 2>^). WithI as… … Fig. 36. ELEMENTS OF MECHANICAL DRA WING. LESSON X.GEOMETRIC PROBLEMS. Problem i. — To construct a 7egular pentagon. Produce AB to C (Fig. 37), making BC equal to AB. From B as a center, with BA as a radius, describethe arc ADC, and divide the half cir-cumference into five equal parts. Fromthe…
Mechanical drawing
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