Question

explore creating a three - dimensional solid

1. press continue to stack an infinite number of polygons on top of

the given polygon.

1. the bases (top and bottom) of the three - dimensional figure are

two congruent
triangles
parallelograms
check

Explanation:

When stacking an infinite number of polygons to form a three - dimensional solid, if the base is a parallelogram (as in the case of a prism formed by stacking parallelograms), the top and bottom bases (which are the first and the last polygons in the stack) are congruent parallelograms. Triangles would form a triangular prism, but the figure in the image (a rectangular - like prism, which is a special case of a parallelogram - based prism) implies parallelograms.

Answer:

parallelograms