Ключевые слова: accuracy, angle, angles, background, bright, centimeter, color, curve, cut, degrees, drawing, education, equipment, geometric, geometry, graphic, horizontal, instrument, isolated, math, mathematical, measure, measurement, measuring, metric, millimeter, nobody, numbers, object, out, plastic, precision, protractor, ruler, scale, school, semicircle, shape, simple, single, small, tool, transparent, trigonometry, white, yellow,