Platonic Solids: The five regular polyhedra (tetrahedron, cube, octahedron, dodecahedron, and icosahedron) that are considered to have profound symbolic and mystical meanings in various spiritual and religious traditions.
Fibonacci Sequence: A mathematical sequence where each number is the sum of the two preceding ones, often found in natural patterns and structures, and associated with sacred geometry and the divine proportion.
Golden Ratio: A mathematical ratio (approximately 1.618) that is believed to be present in many natural and man-made structures, and is considered to have aesthetic and symbolic significance in various cultures.