Ключевые слова: background, book, business, calligraphy, circle, college, creative, design, dictionary, education, english, example, figure, formula, geometer, geometric, geometry, headline, information, interactive, line, mathematical, mathematician, motion, move, nomenclature, number, object, orange, page, paper, point, polygon, position, presentation, property, school, schooling, shape, similar, size, space, square, teaching, term, text, trapeze, triangle, visual, word,