Ключевые слова: abscissa, abstract, background, chalk, chart, college, complex, concept, coordinate, coordinates, design, diagram, draw, drawing, educate, education, figure, flat, formula, function, geometry, graph, graphic, illustration, image, isolated, learning, lesson, line, linear, math, mathematics, minimal, mobile, ordinate, outline, pictogram, point, red, school, science, shape, straight, study, symbol, system, thin, university, white,