Ключевые слова: 3d, abstract, algebra, art, background, board, business, calculation, calculator, chart, color, colorful, concept, contour, cube, design, diagram, element, equation, figure, finance, geometric, geometry, gradient, graph, graphic, icon, illustration, infographic, isolated, isometric, line, linear, lineart, math, object, outline, pie, presentation, profit, pyramid, root, schedule, school, shape, sign, square, symbol, triangle,