Lange, David C. (David Christoph) · New York, John Wiley & sons, inc.; [etc., etc.] · leaf 84
Roman Doric Order. PRINCIPLES OF SHADES AND SHADOWS 71 … CuKNlCB. 72 SHADOWS OF LINES jection, a line making an angle of 45° with the GL. (Chap.I, Art. 27.) Axiom II. The shadow of a straight line perpendicular to Oliy (inhe coordinates, is a line making an angle of 45°with the GL, in projection on that coordinate, or on anyseries of surfaces, forms, or…
Shades and shadows · Geometry, Descriptive
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