Ключевые слова: 3d, angle, area, collection, cube, decision, design, dodecahedron, edge, education, element, figure, geometric, geometry, graphic, help, hight, icosahedron, illustration, isolated, learn, mathematics, maths, mind, octahedron, poster, presentation, problem, pyramid, regular polyhedron, right, school, set, shape, smart, solution, solving, space, study, surface, tetrahedron, theorem, university, volume, volumetric,