Ключевые слова: 3d, abstract, art, background, circle, construction, crystal, cube, design, dodecahedron, education, element, engineering, figure, form, geometric, geometry, graphic, gray, icon, icosahedron, illustration, isolated, line, mathematics, modern, object, octahedron, perspective, platonic, polygon, polyhedron, prism, pyramid, red, regular, school, science, set, shape, sign, solid, square, structure, symbol, technology, tetrahedron, threedimensional, triangle,