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AMC 12 2023b Problem 25

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A regular pentagon with area 5+1\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?

\textbf{(A)}4-\sqrt{5} \textbf{(B)}\sqrt{5}-1 \textbf{(C)}8-3\sqrt{5} \textbf{(D)}\frac{\sqrt{5}+1}{2} \textbf{(E)}~\frac{2+\sqrt{5}}{3}

Dataset text AMC 12 2000 to 2025. Quoted with source.

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