user-avatar
ntqueminh1984
2 năm trước
Câu 5. Cho ABC có AB < AC; AD là phân giác góc A. Trên tia AC lấy điểm E sao cho AE = AB. Chứng minh: a) ABD = AED b) Trên tia AB lấy điểm F sao cho AF = AC. Chứng minh: FBD = CED c) AD  CF d) DF = DC e) BE // CF f) Ba điểm F, D, E thẳng hàng.
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

26. The last time I went to the museum was a year ago. A. At last I went to the museum after a year. B. I haven’t been to the museum since a year. C. My going to the museum lasted a year. D. I have not been to the museum for a year. 27. What language are they going to speak at the conference? A. What language is going to speak at the conference? B. What language is going to be spoken at the conference? C. What is language going to be spoken at the conference? D. What language is going to be speaking at the conference? 28. Hunting for meat and burning forests for soil cause destruction to wildlife. A. organization B. contamination C. protection D. damage 29. Many plants and endangered species are now endangering of _______. A. expression B. expulsion C. extinction D. extension 30. You ________ ask a woman about her age. It’s not polite. A. must B. need C. musn’t D. needn’t 31. Pay attention ________ all traffic signs when you are travelling in the street. A. for B. on C. to D. from 32. I’ll lend you the money and you ________ pay me back till next month. A. needn’t B. mustn’t C. need D. must 33. I haven’t met old English teacher since I left school. A. I didn’t have a chance to meet my old English teacher because I left school. B. this is the last time I met my old English teacher at school. C. I last met my old English teacher when I left school. D. My old English teacher hasn’t met me since I have left school 34. Books in the home are a wonderful....... of knowledge and pleasure. A. source B. resource C. list D. sum 35. Reviewers describe books ....... "hard-to-put-down", or "hard-to-pick-up-again". A. as B. for C. into D. in 36. Books are still a cheap........ to get knowledge and entertainment. A. means B. way C. method D. measure 37. John lent me this book. A. This book was lent to me by John. B. I lent this book to John. C. This book is lent to me by John. D. I was lent by John this book. 38. They had seen the man in a parking lot. A. The man was seen in a parking lot. B. The man has been seen in a parking lot. C. The man was to be seen in a parking lot. D. The man had been seen in a parking lot. 39. People say that prevention is better than cure. A. It is said that prevention is better than cure. B. Prevention is said to be better than cure. C. Prevention is to have said to be better than cure. D. A and B are correct. 40. My mother gave a watch to me.

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