Ключевые слова: 3d, angle, background, centimeter, circle, color, colorful, degree, degrees, design, drafting, drawing, education, engineer, engineering, equipment, geometric, geometrical, geometry, grid, icon, illustration, instrument, isolated, math, mathematical, mathematics, measure, measurement, measuring, millimeter, minimal, minimalism, object, office, orange, protractor, render, rendering, ruler, scale, school, shape, single, symbol, tilt, tool, transparent, work, yellow,