Ключевые слова: a3, a4, architect, background, bely, blank, business, circle, compass, concept, create, creation, creature, design, designer, drafting, draw, drawing, education, engineering, equipment, geometric, instrument, invent, isolated, layout, line, made, man, mathematical, objects, office, paper, pencil, picture, plan, process, scheme, school, sheet, sizes, sketch, table, tool, top, using, various, view, white, work,