Ключевые слова: 5th, aether, air, alchemy, analogue, assignment, classical, concept, congruent, convex, cosmos, cube, dodecahedron, earth, element, elements, fifth, fire, four, four elements, geometry, icosahedron, illustration, isolated, johannes kepler, kepler, mathematics, model, octahedron, philosophy, plato, platonic, platonic solid, platonic solids, polyhedron, pyramid, quintessence, regular, sacred geometry, shape, solid, solids, structure, symbol, symmetry, system, tetrahedron, theory, universe, water,