Drawing Lines at an Angle 15 and 75 Small 320×203 Medium 640×406 Large 1024×649 Download Tiff Original 2400×1522 | (416.3 KB) Description It is possible to draw lines forming angles of 15 and 75 degrees by arranging two triangles. Keywords 15 degrees, 75 degrees, drawing tools Galleries Mechanical Drawing Source: Kenison, Ervin Mechanical Drawing (Chicago, IL: American School of Correspondence, 1916) Courtesy the private collection of Roy Winkelman
