Ключевые слова: accessory, background, blue, centimetre, color, construction, distance, education, engineering, equipment, flat, geometric, geometry, green, grunge, instrument, item, knowledge, lay, learn, length, math, mathematics, measure, measurement, measuring, meter, modern, nobody, object, office, plastic, pupil, ruler, rulers, school, size, stationery, straight, student, study, subject, supplies, task, tool, top, triangle, view,