Cho tam giác ABC vuông tại A.D là trung điểm của BC.Gọi E,F lần lượt là chân đường vuông góc kẻ từ B và C đến AD.CM: AD lơn hơn (BE+CF)/2

Các câu hỏi liên quan

tất cả có 64 câu, ai lm thì làm nha, mik hết điểm rồi I. Complele the following sentences with correct tags. 1. You broke the window, ____________? 2. They didn’t see you , _____________ ? 3. He plays the gutar badly, ___________? 4. I am not stupid , _______________ ? 5. My wife cooks well, ______________? 6. She doesn’t come here, _______________ ? 7. Tom can help her, ________________? 8. You won’t be late, _______________ ? 9. You know Bob Winton.____________? 10. You don’t know Jack Smith,__________ ? 11. Hai can play the piano,___________ ? 12. I’m your friend,______________ ? 13. Hai lives in Hue,_____________? 14. Mai came to class yesterday,__________ ? 15. Everything is ok,______________? 16. Nothing is wrong,_____________? 17. Nobody called on the phone, _______? 18. They couldn’t understand him, _________? 19. He has got a car, ____________? 20. You are a doctor, _____________? 21. You aren’t a doctor, _____________? 22. You go to school today, _____________? 23. She doesn’t eat meat, ___________? 24. There wasn’t enough time, __________? 25. You went shopping yesterday, _______? 26. Let’s go, _____________? 27. No salt is allowed, _____________? 28. Nothing was said, _____________? 29. Neither of them complained, ________? 30. I am right, _____________? 31. Let’s sing karaoke, _____________? 32. Turn on the light , _____________? 33. Don’t be late, ____________? 34. He has helped nobody, ____________? 35.You used to study in Quang Trung school , _____________? 36. Luciano Pavarotti is a great singer, _____________? 37. It isn't very cold today, _____________? 38. Ms. Patton assigns a lot of homework, _____________? 39. I didn't bring enough money, _____________? 40. The children won't want to go to bed early, _____________? 41. You have already seen Braveheart, _____________? 42. The movie received several Oscars _____________? 43. We can't keep our dog in the hotel room, _____________? 44. The Braves would like to win another World Series , _____________? 45. Basketball players don't have small feet, _____________? 46. Khanh will be in class tomorrow,___________ ? 47. Children shouldn’t play with matches,_____________? 48. Someone recognized you,________________ ? 49. You don’t like playing games, ________________ ? 50. They should have been able to do it , _______________ ? 51. The students should keep silent, _______________ ? 52. Mary seldom wears her dress, ________________ ? 53. Tom and Jerry can’t live in peace, _______________ ? 54. The case weights thirty kilos, ________________ ? 55. Let’s help the old woman with the housework, _______________ ? 56. The book which I borrowed from you yesterday is from the library,_____________ ? 57. The John family used to live in Liverpool, _______________ ? 58. Mr Bao said that we should use solar energy , _______________ ? 59. Islam is her country’s official religion, _______________ ? 60. Some designers have made Ao dai modern and fashionable, ____________ ? 61. A huge tidal wave hit Anchorage, Alaska, in the1960s, _______________ ? 62. You think secondary students should wear uniforms to school,______________? 63. Mai and Lan won’t come with us, _______________ ? 64. The weather isn’t very bad today, _____________ ?