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Author: Annie Fetter
Description: Geometry, difficulty level 4. Triangle PQR is inscribed in a circle. If PR is a side of a 21-sided inscribed regular polygon, PQ is a side of a 28-sided incribed regular polygon, and QR is a side of an n-sided inscribed regular polyon, find a possible value for n.

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Problem page: /library/go.html?destination=1491
Solution page: Problem #1491

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