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YGO 2024, 10-11 класи, Задача 5.

Нехай 𝐴𝐵𝐶𝐷𝐸𝐹 — вписаний шестикутник, причому 𝐴𝐷||𝐸𝐹. На діагоналях 𝐴𝐸 та 𝐷𝐹 відмітили точки 𝑋 та 𝑌 відповідно так, що 𝐶𝑋 = 𝐸𝑋 та 𝐵𝑌 = 𝐹𝑌. Нехай 𝑂 — точка перетину 𝐴𝐸 та 𝐹𝐷, 𝑃 — точка перетину 𝐶𝑋 та 𝐵𝑌, 𝑄 — точка перетину 𝐵𝐹 та 𝐶𝐸. Доведіть, що точки 𝑂, 𝑃, 𝑄 лежать на одній прямій.

Матвій Курський



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YGO 2024, 10-11 класи, Задача 5.

Нехай 𝐴𝐵𝐶𝐷𝐸𝐹 — вписаний шестикутник, причому 𝐴𝐷||𝐸𝐹. На діагоналях 𝐴𝐸 та 𝐷𝐹 відмітили точки 𝑋 та 𝑌 відповідно так, що 𝐶𝑋 = 𝐸𝑋 та 𝐵𝑌 = 𝐹𝑌. Нехай 𝑂 — точка перетину 𝐴𝐸 та 𝐹𝐷, 𝑃 — точка перетину 𝐶𝑋 та 𝐵𝑌, 𝑄 — точка перетину 𝐵𝐹 та 𝐶𝐸. Доведіть, що точки 𝑂, 𝑃, 𝑄 лежать на одній прямій.

Матвій Курський

BY Geometry Ukraine



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