A dodecahedron pyramid does not exist.
However, a dodecagon pyramid exists. If a dodecagon has 12 sides, there would be 12 vertices. But all the vertices would join up to make a vertex, making one extra vertex. 12 + 1 = 13
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A regular dodecahedron has 20 vertices, 12 faces and 30 edges. A dodecahedron can also be a endacagon based pyramid which has 12 vertices, 12 faces and 22 edges, or A decagon based prism which has 20 vertices, 12 faces and 30 edges, or one of many other configurations.
A dodecahedron can have 8 to 20 vertices.
89 vertices and 444 faces
Square pyramid : 5 vertices. Triangular pyramid : 4 vertices.
A triangular pyramid has 4 vertices. A retangular and square pyramid has 5 vertices. A pentagonal pyramid has 6 vertices. A hexagonal pyramid has 7 vertices.