A practical course in mechanical drawing for individual study and shop classes, trade and high schools (1912)
Willard, William Franklin, 1879- · Chicago : Popular mechanics company · leaf 30
Fig. 16 outer square? The syringa is a four-petaled flowershaped like a square. Exercise 18.—Pentagon within a circle. Construc-tion : Bisect the diameter of the circle. Bisect a ra-dius. With C as center and AC as radius, describe arcat B. With A as a center and AB as a radius, describearc on the… … Fig. 17
Mechanical drawing
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