ALL GEOMETRY Part 1 of the OGE Mathematics 2026 | Tasks 15 16 17 18 19 | Umskul

👉 Get free, useful files for preparing for the OGE in mathematics from the pinned Telegram channel: https://t.me/+rS30kapZEylmMTMy Solving the problem: Task 23 of the OGE in mathematics. Find the side AB of the trapezoid ABCD if angles ABC and BCD are equal to 45° and 15°, respectively, and CD = 26°. Source: fipi.ru I'm Danir Baev, preparing for the OGE in mathematics at the Umskul online school. Over the past 8 years, I've already trained over 6,000 students to get A's 💪 I turn humanities students into techies, and techies into math experts: to the former, I explain geometry using pizzas, and to the latter, I explain even the most complex topics with crystal clarity. With me, you'll get an A, even if you think you're a complete noob! 🍓 Prepare for the OGE with Umschool now to be sure to get the best score. Follow the link to sign up or ask a question: https://short.umschool.net/ovJf We'll create a personalized learning track for you in 4 subjects so you won't burn out and will help you achieve the scores you dream of! With our teachers, you'll definitely understand and love the subject and learn about all the pitfalls of the exams. A little about Umschool: — Every eighth student who achieved a perfect score in Russia in 2025 prepared at Umschool. — We've trained over 4,900 students who achieved a perfect score. — 47,000 of our students have scored 90+ on the Unified State Exam. — 80,000+ excellent students have passed the OGE. — Over 9 years, we've prepared over 600,000 students for the Unified State Exam and the OGE. 🔔 Subscribe to the channel, like, and click the bell so you don't miss new videos! 💙 Watch my videos and live broadcasts on VK Video: https://vk.cc/cDHmzJ #umskul #oge #math