Question

1) (2 points) Imagine a 21-gonal prism. How many total faces does this prism have? Provide a clear

and detailed justification for your answer, using appropriate vocabulary, that does not rely on a
formula.

Answer 1

Answer: There are 23 faces total.

Step-by-step explanation:

This is because there are 21 lateral faces, each of which are a rectangle. Then there are the 2 base faces which are each 21-gons. A 21-gon is a 21 sided polygon. So we have 21+2 = 23 faces total.