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 392
Fig. 82 With the radius 8 feet 6 inches and the points so located ascenters, the arcs may be drawn for the under side of thearched opening, and by lengthening the radius 2 feet the §5 ELEMENTARY PERSPECTIVE DRAWING 97