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 115
through n and t io w and v, therefore, give the lines ofintersection, and again we find that these lines are at an angleof 45° with the axes of the prisms, as both intersecting slopesare at the same angle. 17. Problem 26. Exercise IV. Sheet IV.—In Problem26, we have the intersection of a pentagonal… … Jd
