Ключевые слова: accuracy, angle, background, centimeter, cm, collection, cutout, degrees, drawing, edge, education, equipment, geometry, graphic, hand, horizontal, inch, instrument, length, line, mathematical, mathematics, measure, measurement, measuring, metric, millimeter, number, office, pencil, plastic, precise, precision, protractor, rule, ruler, scale, school, set, size, straight, supplies, symbol, tool, transparent, triangle, white, work,