Ключевые слова: 3d, abstract, art, background, black, circle, connect, creative, cube, design, escher, esher, figure, frame, geometric, geometry, hexagon, icon, illusion, illustration, impossible, infinity, line, logo, loop, magic, modern, object, optical, outline, paradox, pattern, penrose, perspective, puzzle, science, shape, sign, simple, square, style, symbol, triangle, unreal, white,