AMC 10 Step by Step
2023 AMC 10BProblem 25P21-25~8 minPrint

A regular pentagon with area 1+51+\sqrt5 is printed on paper and cut out. All five vertices are folded to the center of the pentagon, creating a smaller pentagon. What is the area of the new pentagon?

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Problem © Mathematical Association of America (MAA), American Mathematics Competitions. Reproduced for non-commercial educational use. Solution and commentary are original to this site.