No because a pentagon is a 5 sided polygon
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Yes, it is.
Yes because polyhedron means many faces
No polyhedron has five sides as a pentagon and a hexagon has six sides
It is a polyhedron with a pentagonal base. To every side of the pentagon are attached triangles that meet at a single point in a plane higher than the pentagon (if it is a skew pyramid, the apex will not be above the pentagon).
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