Shades and shadows, with applications to architectural details, and exercises in drawing them with the brush and pen .. (1912)
Ware, William R. (William Robert), 1832-1915 · Scranton, International Textbook Company · leaf 27
Circle upon a Pyramid. In both cases, 45-degree vertical secant planes, and their intersections with boththe given surfaces, are first drawn upon the plan. These lines of intersection are then transferred to theelevations. Points upon the object that casts the shadow have their shadows in the…
Shades and shadows
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.