Ключевые слова: abstract, architect, architecture, art, background, blue, collection, color, concept, construction, curve, curves, design, drafting, drawing, education, element, engineering, equipment, french, french curve, geometry, graphic, green, icon, illustration, instrument, isolated, object, paper, plan, plastic, retro, ruler, school, sewing, shape, sign, silhouette, stencil, symbol, template, tool, transparent, work,