Ключевые слова: 3d, abstraction, art, background, business, color, communication, concept, contour, creative, cycle, design, effect, element, emblem, fantasy, fashionable, geometric, geometry, icon, illusion, illustration, impossible, infinite, infinity, insignia, isolated, line, linear, logo, loop, modern, node, object, optical, optical illusion, penrose, pyramid, science, shape, sign, single, style, symbol, technology, thin, triangle, triangular, unity,