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Верю — не верю

Некоторые из приведенных ниже шести утверждений верны в общем случае. Какие?
Anonymous Poll
1. Если у двух четырехугольников совпадают все 4 вершины, то они имеют равные площади.
2. В геометрии Лобачевского для любого треугольника есть прямая, равноудалённая от всех его вершин.
3. Центр окружности, вписанной в египетский треугольник, равноудален от середин двух его сторон.
. Если р/б треугольник можно разрезать на три меньших р/б треугольника, то два из них равны.
5. Если прямая делит пополам площадь 4-угольника и 2 его стороны, то он параллелограмм или трапеция.
6. Если все вершины многогранника лежат на одной сфере, то этот многогранник выпуклый.
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Telegram | DID YOU KNOW?

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Some privacy experts say Telegram is not secure enough Telegram, which does little policing of its content, has also became a hub for Russian propaganda and misinformation. Many pro-Kremlin channels have become popular, alongside accounts of journalists and other independent observers. The regulator said it has been undertaking several campaigns to educate the investors to be vigilant while taking investment decisions based on stock tips. 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. On February 27th, Durov posted that Channels were becoming a source of unverified information and that the company lacks the ability to check on their veracity. He urged users to be mistrustful of the things shared on Channels, and initially threatened to block the feature in the countries involved for the length of the war, saying that he didn’t want Telegram to be used to aggravate conflict or incite ethnic hatred. He did, however, walk back this plan when it became clear that they had also become a vital communications tool for Ukrainian officials and citizens to help coordinate their resistance and evacuations.
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