12 faces, 30 edges and 20 vertices.
It has 2 decagons plus 10 rectangles between them giving 12 faces
It has 2 x 10 vertices on each decagon giving 20 vertices
It has 10 edges round each decagon plus another 10 joining the vertices of one decagon to the other decagon's vertices giving 2x10+10 = 30 vertices
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6 vertices, 2 triangular faces, 3 rectangular sides, 9 edges
Pentagonal Prism = 2 pentagonal bases + 5 lateral faces Pentagonal Prism = 7 faces Pentagonal Prism has 10 vertices Pentagonal Prism has 15 edges
There are infinitely many polyhedra. Hexagonal Prism, Septagonal Prism, Ocatagonal Prism, Nonagonal Prism, Decagonal Prism, etc...
A rectangular prism has 6 sides and 8 vertices.
5 faces (sides) 9 edges 6 vertices