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2023 AMC 12B Question 25

AMC12 · 2023 AMC 12B

Question 25

A regular pentagon with area $\sqrt{5}+1$ is printed on paper and cut out. The five vertices of the pentagon are folded into the center of the pentagon, creating a smaller pentagon. What is the area of the new pentagon?
  1. $4-\sqrt{5}$
  2. $\sqrt{5}-1$
  3. $8-3\sqrt{5}$
  4. $\dfrac{\sqrt{5}+1}{2}$
  5. $\dfrac{2+\sqrt{5}}{3}$