A dodecahedron need not have any triangular faces.
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dodecahedron has 12 triangles as faces.
Dodecahedron. The 5 "Platonic Solids" are: Cube/ 6 square sides Tetrahedron/ 4 triangles Rhomboid/ 8 triangles Dodecahedron/ 12 pentagons Icosahedron/ 20 triangles
A dodecahedron can have 8 to 20 vertices.
A dodecahedron has 0 parallel faces
There are at least three faces at a vertex of a dodecahedron, and at most eleven.