Ключевые слова: art, background, button, centimeter, concept, console, contour, control, corner, design, desk, device, dimension, drawing, education, element, equipment, flat, geometric, geometry, graphic, icon, illustration, image, inch, isolated, isometric, level, line, linear, lineart, long, mark, measure, measurement, meter, number, object, outline, ruler, scale, school, sign, silver, square, symbol, tool, triangular, web,