Ключевые слова: abstract, crystal, design, diamond, dodecahedron, education, figure, filled, flat, form, geometric, geometrical, glyph, graphics, hexagon, hexagonal, icon, illustration, logo, octahedron, pentagon, perfect, pictogram, pixel, polygon, polyhedron, prism, pyramid, shape, sign, simple, single, solid, structure, symbol, tetrahedron, web,