Geometrical drawing, projection drawing, freehand and ornamental drawing, wash work and brush drawing, elementary perspective drawing, architectural drawing (1921)
International Correspondence Schools · Scranton, PA : International Textbook Co. · leaf 111
of equal diameters, while Sheet VIshows the intersection of two semicylinders of differentdiameters. The purpose of these six problems is to illus-trate methods by which the lines of intersection of any twoslopes may be obtained, and at the same time to presentgeometrical solids as illustrations… … <o o J §2 PROJECTION DRAWING 33 of the triangular prism a be, its point a being 1 to the left ofthe vertical center line, and ^\ above the horizontal centerline. The sides of the prism are \\ each and the angleseach 60°. The plan of this prism defg is then drawn belowthe base c^ as shown, the…
