12*(12-3)/2 = 12*9/2 = 54
No, the faces of a regular dodecahedron are pentagonal.No, the faces of a regular dodecahedron are pentagonal.No, the faces of a regular dodecahedron are pentagonal.No, the faces of a regular dodecahedron are pentagonal.
Twelve.
27 diagonals
4 diagonals
A regular 12 sided dodecagon has 54 diagonals.