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Разминка дня №35 (авторская, мордовский муницип 10.3):
Дана трапеция ABCD с основаниями AB и CD такая, что AC перпендикулярно CD. E на BC такова, что ∠DAC = ∠CAE. BD пересекает AC в точке F. Докажите, что EF || CD.
Разминка дня №35 (авторская, мордовский муницип 10.3):
Дана трапеция ABCD с основаниями AB и CD такая, что AC перпендикулярно CD. E на BC такова, что ∠DAC = ∠CAE. BD пересекает AC в точке F. Докажите, что EF || CD.
The last couple days have exemplified that uncertainty. On Thursday, news emerged that talks in Turkey between the Russia and Ukraine yielded no positive result. But on Friday, Reuters reported that Russian President Vladimir Putin said there had been some “positive shifts” in talks between the two sides. Telegram boasts 500 million users, who share information individually and in groups in relative security. But Telegram's use as a one-way broadcast channel — which followers can join but not reply to — means content from inauthentic accounts can easily reach large, captive and eager audiences. But because group chats and the channel features are not end-to-end encrypted, Galperin said user privacy is potentially under threat. There was another possible development: Reuters also reported that Ukraine said that Belarus could soon join the invasion of Ukraine. However, the AFP, citing a Pentagon official, said the U.S. hasn’t yet seen evidence that Belarusian troops are in Ukraine. As the war in Ukraine rages, the messaging app Telegram has emerged as the go-to place for unfiltered live war updates for both Ukrainian refugees and increasingly isolated Russians alike.
from tw
