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 107
circumference of the plan of the cylinderis divided into twenty-four parts, as 1, 2, 3, 4, etc. This canbe readily done by a combination of the 60°, 30°, and 45°triangles. Lines from these points of division are projectedthrough both elevations, as shown, and from the points wherethese lines… … Date Time consumed inexecuting; this sheet Aamr of Student, Class Lettersand Number 28 §2 PROJECTION DRAWING 29 These points of intersection, connected with a curved linewill represent the outline of the surface of the plane cuttingthrough the cylinder. 13. Problem 22. Exercise III, Sheet…
