This Stellated Pentagonal Dodecahedron Is A 12 Pentagrammic Face Figure. It Is Formed Through The Process Of Extending The Edges Or Face Planes Of A Polyhedron Regular Dodecahedron In A Symmetrical Way To Form The Closed Stellar Figure. The Core Regular Dodecahedron, Being One Of The Five Platonic Solids, Has 12 Faces, 20 Vertices, 30 Edges, And 160 Diagonals (60 Face Diagonals, 100 Space Diagonals).