Ключевые слова: app, application, background, button, centimeter, construction, cut, design, education, element, equipment, flat, geometric, geometry, graphics, horizontal, icon, illustration, inches, instrument, isolated, length, long, macro, mathematics, measure, measurement, number, object, office, old fashioned, ruler, school, shape, sign, simple, single, site, stationery, straight, supply, symbol, web, website, wood, wooden, work, yellow,