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#геом_разминка

Задача.
В окружности 𝜔 с центром в точке 𝑂 провели непересекающиеся хорды 𝐴𝐵 и 𝐶𝐷 так, что ∠𝐴𝑂𝐵 = ∠𝐶𝑂𝐷 = 120°. Касательная к 𝜔 в точке 𝐴 пересекает луч 𝐶𝐷 в точке 𝑋, а касательная к 𝜔 в точке 𝐵 пересекает луч 𝐷𝐶 в точке 𝑌. Прямая 𝑙 проходит через центры окружностей, описанных около треугольников 𝐷𝑂𝑋 и 𝐶𝑂𝑌. Докажите, что 𝑙 касается 𝜔.

Желаем вам везде успеть. И главное, помните: успевает всюду тот, кто никуда не торопится 🐌
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#геом_разминка

Задача.
В окружности 𝜔 с центром в точке 𝑂 провели непересекающиеся хорды 𝐴𝐵 и 𝐶𝐷 так, что ∠𝐴𝑂𝐵 = ∠𝐶𝑂𝐷 = 120°. Касательная к 𝜔 в точке 𝐴 пересекает луч 𝐶𝐷 в точке 𝑋, а касательная к 𝜔 в точке 𝐵 пересекает луч 𝐷𝐶 в точке 𝑌. Прямая 𝑙 проходит через центры окружностей, описанных около треугольников 𝐷𝑂𝑋 и 𝐶𝑂𝑌. Докажите, что 𝑙 касается 𝜔.

Желаем вам везде успеть. И главное, помните: успевает всюду тот, кто никуда не торопится 🐌

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