There is no such object. A decahedron is a 3-d object with 10 faces whereas a dodecahedron is a 3-d object with 12 faces. Each of them can have different numbers of edges.
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12 Edges is how many edges a rectangular prismhas
24 edges.24 edges.24 edges.24 edges.
none its how many edges does a corner have
72 Edges
20 edges