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 19
y (b) Fio. 9 Fig. 10 whose three visible sides are s(iiiares; this figure is calleda cube. Any figure having a triangle, square, hexagon, or otherregular surface for its base, and parallelograms for its sides,as in Fig. 10, is called a prism. It is a right prism if theparallelograms forming its…
