Ключевые слова: abstract, accounting, axis, black, board, business, button, chart, contour, diagram, dimensions, direction, display, education, exam, form, geometric, gold, golden, icon, illustration, infographic, isolated, library, line, linear, literature, mathematics, notification, open, outline, paper, pen, pentagonal, pie, presentation, prism, profit, ring, ringing, schedule, set, sign, space, symbol, tablet, textbook,