Задача. В треугольнике 𝐴𝐵𝐶, вписанном в окружность Ω, проведены высоты 𝐴𝐴₁ и 𝐶𝐶₁. Прямая 𝐴₁𝐶₁ пересекает Ω в точках 𝑃 и 𝑄. Точки 𝑃 ′ и 𝑄′ симметричны точкам 𝑃 и 𝑄 относительно сторон 𝐴𝐵 и 𝐵𝐶. Докажите, что 𝑃 ′𝑄′ ‖ 𝐴𝐶.
Задача. В треугольнике 𝐴𝐵𝐶, вписанном в окружность Ω, проведены высоты 𝐴𝐴₁ и 𝐶𝐶₁. Прямая 𝐴₁𝐶₁ пересекает Ω в точках 𝑃 и 𝑄. Точки 𝑃 ′ и 𝑄′ симметричны точкам 𝑃 и 𝑄 относительно сторон 𝐴𝐵 и 𝐵𝐶. Докажите, что 𝑃 ′𝑄′ ‖ 𝐴𝐶.
How to Create a Private or Public Channel on Telegram? Over 33,000 people sent out over 1,000 doxxing messages in the group. Although the administrators tried to delete all of the messages, the posting speed was far too much for them to keep up. Find your optimal posting schedule and stick to it. The peak posting times include 8 am, 6 pm, and 8 pm on social media. Try to publish serious stuff in the morning and leave less demanding content later in the day. Activate up to 20 bots Your posting frequency depends on the topic of your channel. If you have a news channel, it’s OK to publish new content every day (or even every hour). For other industries, stick with 2-3 large posts a week.
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