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