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18 of them because an hexagonal prism has 18 edges
A pentagonal prism would fit the given description
A pentagonal is not a shape. You an have a pentagonal pyramid, a pentagonal prism or a pentagonal polyhedron as well as other shapes - each would give a different set of answers.
A pentagonal prism would seem to fit the given description.
A triangular prism and a pentagonal based pyramid would fit the given description.
18 of them because an hexagonal prism has 18 edges
9 straws because it has 9 edges, 6 vertices and 5 faces
16
A pentagonal prismoid. If the lateral faces were rectangles, it would be a pentagonal prism.
A pentagonal prism would fit the given description
A pentagonal is not a shape. You an have a pentagonal pyramid, a pentagonal prism or a pentagonal polyhedron as well as other shapes - each would give a different set of answers.
10
the other faces on a pentagonal prism would be rectangular
5
A pentagonal cross-section prism would fit the given description
A triangular prism and a pentagonal based pyramid would fit the given description.
A pentagonal prism would seem to fit the given description.