ну і ось лема за тим же авторством, яку я згадав в коментарях.
сині точки P, Q ізогональні. через них і вершини проведено коніку (ABCPQ), точка перетину U якої з описаним колом (ABC), що відрізняється від вершин. через U провели довільну пряму, яка перетинає (ABC) в R і (ABCPQ) в S.
(!) доведіть вписаність чотирикутника PQRS
BY скучні задачі
With the help of the Search Filters option, users can now filter search results by type. They can do that by using the new tabs: Media, Links, Files and others. Searches can be done based on the particular time period like by typing in the date or even “Yesterday”. If users type in the name of a person, group, channel or bot, an extra filter will be applied to the searches.
In recent times, Telegram has gained a lot of popularity because of the controversy over WhatsApp’s new privacy policy. In January 2021, Telegram was the most downloaded app worldwide and crossed 500 million monthly active users. And with so many active users on the app, people might get messages in bulk from a group or a channel that can be a little irritating. So to get rid of the same, you can mute groups, chats, and channels on Telegram just like WhatsApp. You can mute notifications for one hour, eight hours, or two days, or you can disable notifications forever.
telegram from ms