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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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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. The picture was mixed overseas. Hong Kong’s Hang Seng Index fell 1.6%, under pressure from U.S. regulatory scrutiny on New York-listed Chinese companies. Stocks were more buoyant in Europe, where Frankfurt’s DAX surged 1.4%. One thing that Telegram now offers to all users is the ability to “disappear” messages or set remote deletion deadlines. That enables users to have much more control over how long people can access what you’re sending them. Given that Russian law enforcement officials are reportedly (via Insider) stopping people in the street and demanding to read their text messages, this could be vital to protect individuals from reprisals. "Your messages about the movement of the enemy through the official chatbot … bring new trophies every day," the government agency tweeted. Messages are not fully encrypted by default. That means the company could, in theory, access the content of the messages, or be forced to hand over the data at the request of a government.
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