How about a cylinder or a cuboid
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It is a prism with non-polygonal bases. The bases simply be two identically shaped "blobby" shapes.
a square
No but a cylinder does have 2 parallel bases
Yes, every prism has 2 parallel bases.
2
A cylinder is formed by two parallel circular bases connected by a curved surface. The circular bases are congruent and lie on opposite sides of the cylinder, while the height of the cylinder is the distance between the two bases.
There are several cases: any 3 dimensional or more object. Since a polygon is defined as being confined to a single plane, any shape that violates the plane is not a polygon but may still have parallel bases. For cases in only 2 dimensions: Any object that has curves in addition to the parallel bases. A polygon's definition includes only straight sides. Finally, unclosed shapes can have 2 parallel bases with out being polygons even if in a single plane and made up of only straight line sides. A polygon must be closed.
A cylinder and a rectangular prism both have two parallel and congruent bases. However, the bases of a cylinder are circles, while the bases of a rectangular prism are rectangles. Both shapes have flat surfaces and straight edges.
yes
yes
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