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A dodecahedron is a 3-dimensional shape with 12 polygonal faces. There are approx 6.4 million topologically different convex dodecahedra, plus concave ones. These have between 8 to 20 vertices and the number of edges is 10 more than the number of vertices - so between 18 and 30.

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Q: How many edges of dodecahedron?
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