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 29
Fig. 15 26 A PRACTICAL COURSE IN spring flower shaped on the order of an isosceles tri-angle. Exercise 13.—Scalene triangle. Base 2;^ inches,and base angles 22y2° and 37/4° respectively. Whatis the sum of the angles? Of any triangle? Fig. 16. Exercise 16.—Inscribe a square within a 3 inchcircle.… … 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…
Mechanical drawing
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