Ключевые слова: back, background, building, business, children, circle, compass, construction, design, draft, draw, drawing, education, engineer, engineering, equipment, geometry, group, instrument, isolated, line, mathematics, measurement, note, object, objects, office, paper, pattern, pen, pencil, planning, print, protractor, rule, ruled, ruler, school, science, set, shape, sketch, square, student, study, technology, tool, tools, triangle, white,