Ключевые слова: algebra, arrow, art, assortment, blank, book, circle, clip, clipart, collection, communication, cone, conversation, cosmos, cube, danger, design, drawing, drawn, economy, education, educative, einstein, electricity, elements, ellipse, formula, galaxy, graph, graphic, icon, illustration, label, math, mathematics, message, physics, planet, point, pyramid, school, set, shape, ship, space, sun, symbol, text, word,