Задача 46: Автор - GeoGen, Ким Пётр, Прозоров Роман
В треугольнике ABC I - центр вписанной окружности, а D - её точка касания со стороной BC. Касательная из D к окружности (AI) пересекает AI в точке E. Докажите, что (DEI) касается (ABC).
Задача 46: Автор - GeoGen, Ким Пётр, Прозоров Роман
В треугольнике ABC I - центр вписанной окружности, а D - её точка касания со стороной BC. Касательная из D к окружности (AI) пересекает AI в точке E. Докажите, что (DEI) касается (ABC).
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 Security Service of Ukraine said in a tweet that it was able to effectively target Russian convoys near Kyiv because of messages sent to an official Telegram bot account called "STOP Russian War." The Dow Jones Industrial Average fell 230 points, or 0.7%. Meanwhile, the S&P 500 and the Nasdaq Composite dropped 1.3% and 2.2%, respectively. All three indexes began the day with gains before selling off. Investors took profits on Friday while they could ahead of the weekend, explained Tom Essaye, founder of Sevens Report Research. Saturday and Sunday could easily bring unfortunate news on the war front—and traders would rather be able to sell any recent winnings at Friday’s earlier prices than wait for a potentially lower price at Monday’s open. A Russian Telegram channel with over 700,000 followers is spreading disinformation about Russia's invasion of Ukraine under the guise of providing "objective information" and fact-checking fake news. Its influence extends beyond the platform, with major Russian publications, government officials, and journalists citing the page's posts.
from us
