Question

A solid has faces that consist of 1 pentagon, 5 congruent equilateral triangles, and 5 congruent squares. The solid has 11 vertices. How many edges does this solid have?
A.
18 edges
B.
20 edges
C.
22 edges
D.
30 edges

Answer 1

@Babynini

Answer 2

hmm this was a long time ago for me. What are vertices? does that just mean faces?

Answer 3

Have you learned about the Euler characteristic?