The minimum number of sides that the polygon at the base of the prism must have is 4.
"It is the plane figure in geometry that has three or more sides and angles in a finite straight line."
For given question,
The plane intersects a prism to form a cross section that is a polygon with 5 sides.
This means, the original shape needs to have less than 5 sides.
A prism, is a three-dimensional geometric shape, so it can't have a 2 sided shape.
So, there're two choices of sides.
i.e., either 3 sides or 4 sides
A 3 sides shape is a triangle, which also can't be cut into a 5 sided prism.
Hence, the minimum number of sides that the polygon at the base of the prism must have is 4.
Read more about polygons here:
brainly.com/question/1592456
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