Ключевые слова: abstract, algebra, art, blue, calculation, concept, contour, design, drawing, education, element, equation, equipment, flat, geometric, geometry, glowing, glyph, green, icon, illustration, infographic, isolated, length, light, line, linear, lineart, math, measurement, neon, outline, profit, pyramid, ruler, scale, schedule, school, shape, sign, sphere, square, straightedge, symbol, triangle, x,