✨ Kết luận ngắn gọn

• \(B C D E\) nội tiếp vì có hai góc vuông chắn \(B C\).
• \(A D H E\) nội tiếp vì có hai góc vuông chắn \(A H\).

I still remember the most pleasant experience I have had at school. It was the day our class won first prize in the school singing contest. We had practiced for weeks, staying after school every day to perfect our performance. On the day of the competition, we were both nervous and excited. When we finished our song, the audience clapped loudly, and the judges smiled in approval. When our class name was announced as the winner, we all jumped up and cheered with joy. That moment made me feel proud of my classmates and teachers. It was a wonderful memory that I will never forget.