user-avatar
huychienks83
2 năm trước
cho tam giác abc có goc b = góc c . bm và cn lần lượt là phân giác của góc b và góc c (m thuộc ac ; n thuộc ab ) bm cắt cn tại e a) chứng minh bm=cn;bn=cm;ab=ac b) chứng minh eb=ec c) chứng minh ae là tia phân giác của góc bac
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

áre uselesS Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions. Question 46: A supermarket is more convenient than a shopping centre. A. A shopping centre is not as convenient as a supermarket. BA shopping centre is more convenient than a supermarket. C.A supermarket is not as convenient as a shopping centre. D. A supermarket is as inconvenient as a shopping centre. Question 47: They have built a new hospital near the airport. A. A new hospital has been built near the airport by they. B. A new hospital has been built near the airport. C. A new hospital has built near the airport. D. Near the airport a new hospital was built. Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions. Question 48: Seeing that he was angry, she left the office. A. He grew very angry when he saw her leaving the office. B. He wouldn't have been so angry if she hadn't been there. C. She left the office when she saw how angry he was. D, She didn't want to make him angry, so she left. Question 49: They can't work. They are too sleepy. (A, Because they can't work, they're too sleepy. B. They are too sleepy that they can't work. C. They are too sleepy to work. D. When they are too sleepy, they can't work. Question 50: I have to do my homework. It means I can't go out with you. A. I have to do my homework, that it means I can't go out with you. B. I have to do my homework, that means I can't go out with you. C. I have to do my homework, which it means I can't go out with you. D. I have to do my homework, which means I can't go out with you. Giúp mk với

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