A textbook on mechanical and electrical engineering (1902)
International Correspondence Schools · Scranton : International Textbook Co. · leaf 58
circle into the required number of parts, beginning at the center lineA C, and then drawing radiallines through the points ofdivision on this circle, to thecenter O of the circles, asj^ shown in the upper right-handquarter of the figure. Theradial lines will divide thesmaller circle into the… … Pig, 56 44 GEOMETRICAL DRAWING §13 lines; the points of intersection of these lines are points onthe ellipse. Thus, the horizontal line Sc and the verticalline 3 c intersecting at c give the point c of the ellipse.Trace a curve through the points thus found by placing anirregular curve on the…
