Ключевые слова: abstract, background, centric, circle, circular, concentric, decoration, design, eddy, geometric, geometry, graphic, grid, gyration, gyre, helix, hypnotic, illusion, illustration, line, lines, optical, pattern, quadrangle, rectangle, repetition, rhombus, rotary, rotating, rotation, round, shape, spin, spiral, square, striped, stripes, swirl, symbol, symmetry, texture, torsion, twirl, twist, vortex, wallpaper, whirl, whirlpool,