a pentagonal prism
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pentagonal prism
The bases are pentagons - 5 sided polygons.
Each and every prism has two parallel congruent bases. It is the shape of these bases that give the name to the prism: a pentagonal prism has pentagons (not necessarily regular) for its bases.
A pentagonal prism has 7 sides : 5 side faces and 2 bases.However, if all sides of the prism are considered faces, a shape with5 total faces including the 2 bases is a triangular prism.
Pentagonal Prism = 2 pentagonal bases , 5 lateral faces, 10 vertices Pentagonal Prism = 7 faces, 15 edges