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