Ключевые слова: analysis, background, calligraphy, chalk, circle, college, design, diagram, drawing, education, element, equation, example, exploration, figure, formula, geometer, geometric, geometry, handwriting, information, interactive, line, manuscript, mathematical, mathematician, motion, nomenclature, paper, point, polygon, position, presentation, project, property, research, sample, school, shape, signs, size, space, square, teaching, term, text, triangle, university, visual, word,