Четырехугольник ABCD вписан в окружность с центром O. Лучи BA и CD пересекаются в точке E, а лучи AD и BC в точке F. Оказалось, что ED = FD. Докажите, что инцентры треугольников ADE и CDF равноудалены от O
Четырехугольник ABCD вписан в окружность с центром O. Лучи BA и CD пересекаются в точке E, а лучи AD и BC в точке F. Оказалось, что ED = FD. Докажите, что инцентры треугольников ADE и CDF равноудалены от O
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%. Friday’s performance was part of a larger shift. For the week, the Dow, S&P 500 and Nasdaq fell 2%, 2.9%, and 3.5%, respectively. In this regard, Sebi collaborated with the Telecom Regulatory Authority of India (TRAI) to reduce the vulnerability of the securities market to manipulation through misuse of mass communication medium like bulk SMS. To that end, when files are actively downloading, a new icon now appears in the Search bar that users can tap to view and manage downloads, pause and resume all downloads or just individual items, and select one to increase its priority or view it in a chat. Elsewhere, version 8.6 of Telegram integrates the in-app camera option into the gallery, while a new navigation bar gives quick access to photos, files, location sharing, and more.
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