Задача 55: Автор - Ким Пётр Источник: MGO 2024, задача 3
Пусть ABCD - вписанный четырёхугольник. Пусть w1 и w2 - две окружности, проходящие через A, B и C, D соответственно и пересекающиеся вне окружности (ABCD). Доказать, что если существует окружность, касающаяся AB, CD, w1, w2,то существует окружность или прямая, касающаяся BC, AD, w1, w2.
Задача 55: Автор - Ким Пётр Источник: MGO 2024, задача 3
Пусть ABCD - вписанный четырёхугольник. Пусть w1 и w2 - две окружности, проходящие через A, B и C, D соответственно и пересекающиеся вне окружности (ABCD). Доказать, что если существует окружность, касающаяся AB, CD, w1, w2,то существует окружность или прямая, касающаяся BC, AD, w1, w2.
He said that since his platform does not have the capacity to check all channels, it may restrict some in Russia and Ukraine "for the duration of the conflict," but then reversed course hours later after many users complained that Telegram was an important source of information. Stocks dropped on Friday afternoon, as gains made earlier in the day on hopes for diplomatic progress between Russia and Ukraine turned to losses. Technology stocks were hit particularly hard by higher bond yields. Elsewhere, version 8.6 of Telegram integrates the in-app camera option into the gallery, while a new navigation bar gives quick access to photos, files, location sharing, and more. The War on Fakes channel has repeatedly attempted to push conspiracies that footage from Ukraine is somehow being falsified. One post on the channel from February 24 claimed without evidence that a widely viewed photo of a Ukrainian woman injured in an airstrike in the city of Chuhuiv was doctored and that the woman was seen in a different photo days later without injuries. The post, which has over 600,000 views, also baselessly claimed that the woman's blood was actually makeup or grape juice. Some privacy experts say Telegram is not secure enough
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