user-avatar
thuhang2604
2 năm trước
Câu 3: Cho tam giác ABC vuông tại A. Gọi H là hình chiếu của A trên BC. Tia phân giác của góc HAC cắt BC tại D. Gọi K là hình chiếu của D trên AC.a) So sánh HD và DK?b) Tam giác ABD là tam giác gì?
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

I Fill in the blanks with the suitable prepositions. 1. You must come ................................... for dinner one night. 2. We‘ll only be ............ town……………………… three days. 3. What’s the weather ................................................................ ? 4. I’ll pick you at the hotel …………………………….7 o'clock. 5. They went swimming .. Waikiki Beach as soon as they......... the Hawaiian island ………………………………….Oahu. 6. If we don‘t finish the report today, we can go with it tomorrow. 7. She complained me …………………………….his rudeness. 8. This doll is made ......................................................... China. 9. We went ............................. a 10-day tour of central Africa. 10. They caught the flight 710 10.00 …………………..Thursday, 22. II. Use the correct form of the words in brackets. 1. I'd like to visit Australia because Australian people are very .................. (friend) 2. It's not easy to find cheap ...... at busy times. (accommodate) 3. Most tourists like visiting ............................. villages. (tribe) 4. There are .................. ways of solving the problem. (variety) 5. Some are not immediately dangerous because they are not ...........active (volcanic) 6. .. , her illness was more serious than we thought. (fortunate) 7. I found the trip very ................................................. . (excite) 8. London is ...... for its historic buildings and churches. (fame) 9. Last summer we had an ......................... trip to Sapa. (enjoy) 10. The waste from the chemical factory is very . ......... (harm) 11. People are now concerned about . pollution. (environment) 12. Don’t bend over suddenly because this can cause ... (faint) 13. Sa Pa is a wonderful .......... resort in Viet Nam. (mountain) 14. My grandfather is over 80, but he is still very ............ (act) 15. It is that your European friends can easily eat with ..........chopsticks. (surprise) 16. She seemed never to forget her .............husband for the rest of her life. (depart) 17. She could feel the .....of the child's hand in her own. (warm) 18. I prefer the dry season to the .........season because I don’t like very wet weather. (rain) 19. The children were well behaved all that morning. (surprise) 20. Many people go into the film industry to look for ........and fortune. (famous) 21. We have had no news from him since his ........from the town. (depart) 22. A computer screen shows the............. and departure times of the planes. (arrive) 23. Our team won most of the .............medals in the events. (gymnast) 24. He traveled across the .................... fields by sleigh. (snow) 25. I was almost .......................... at her early arrival. (surprise) 26. She greeted all the guests ......... when they arrived. (warm) 27. It was an ........................ trip. Everyone enjoyed it. (excite) 28. They stayed at a .........resort which overlooked a beautiful lake. (mountain) 29. We went on a lot of ........tours when we visited difierent cities. (sightsee) 30. It was a great vacation. The food was good and the .........was excellent. (accommodate)

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team