Ключевые слова: centimeter, collection, construction, design, device, draft, drafting, draw, drawing, education, engineer, engineering, equipment, geometry, graphic, instrument, line, math, mathematical, mathematics, measure, measurement, metric, millimeter, pencil, precision, project, projection, protractor, red, ruler, scale, school, set, shape, sketch, sketching, steel, study, supply, symbol, technical, tool, triangle, wooden, work,