There are 30 edges on a decagonal prism.
30
20
It has 11. There are the 10 sides (decagonal) and then the base. So 11 total.
it is 19 I am really juhnm kjnbvcx
Vertices: 20 Edges: 30 Faces: 12
12 faces 20 vertices 30 edges
Edges = 30 Faces = 12 Vertices = 20
19 * * * * * Actually it is 30 edges. Ten around each of the decagonal faces, and ten more connecting the corresponding vertices of the two decagons.
If the prism is based on regular decagons and it is a right prism, all 12 faces.
A decagonal prism has 12 faces
By definition, a dodecahedron must have twelve faces. So it must be an decagonal prism. Edges = 30 Faces = 12 Vertices = 20