An Amicelli box!
THIS IS NOT TRUE IT IS HEXAGONAL!!
a doghouse
A building would be a perfect example. If you simplify the details of a building, it becomes a rectangular prism. If you specifically mean a "square" prism, that would be a cube, an example of which would be a Rubik's Cube or a few dice.
A piece of sliced okra https://www.istockphoto.com/au/photo/two-slice-of-fresh-green-okra-isolated-on-white-background-gm823406442-133208831
roof
A hexagon does not have faces it does't even have 1,your talking about sides and vertices. The real answer is a rectangular prism. * * * * * Or a pentagonal pyramid Or a triangular dipyramid.
The Pentagon Department of defense office building
a doghouse
A solid brick is a rectangular prism. (this one example of many)
A pencil.
stuff
A tent
A gaming die.
A real life example is a Toblerone chocolate bar which is in the shape of a triangular prism.
Oh honey, a pentagonal prism is like a fancy way of saying a shape with five sides and two pentagon faces. So, grab a dice and take a good look at it - that bad boy is a pentagonal prism in disguise. Or, if you're feeling extra fancy, check out a house of cards - those suckers are pentagonal prisms stacked up real nice.
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Pup tent or lean-to
A building would be a perfect example. If you simplify the details of a building, it becomes a rectangular prism. If you specifically mean a "square" prism, that would be a cube, an example of which would be a Rubik's Cube or a few dice.