Ключевые слова: 3d, abstract, analysis, button, check, checklist, choice, cos, cosine, curve, design, document, education, element, exam, figure, form, function, geometric, geometry, graph, icon, illustration, isolated, list, mark, math, mathematics, orange, paper, plot, pyramid, questionnaire, school, science, set, shape, sign, sine, sphere, symbol, test, triangle, trigonometry, wave, white,