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Omni-MATH / Let A₁A₂…A₁₉ be a regular nonadecagon. Lines A₁A₅ and A₃A₄ meet at X. Compute ∠A₇XA₅. · Discussion

Discussing Let A₁A₂…A₁₉ be a regular nonadecagon. Lines A₁A₅ and A₃A₄ meet at X. Compute ∠A₇XA₅. · Omni-MATH

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