user-avatar
jeniffer1872000
2 năm trước
Giúp mình với Bài 2: Nếu định nghĩa và các tính chất của tam giác cân, tam giác d Bải 3: Cho tam giác ABC cần tại A. Trên cạnh AB lấy điểm E, trên cạnh AC lấy điểm F sao cho: AE - AF. Tam giác AEF là tam giác gi? Chứng minh EF// BC. Bải 4: Cho tam giác ABC có AB<AC. Kẻ tia phân giác AD của góc BAC (D thuộc BC). Trên cạnh AC lấy điểm E sao cho AE-AB, trên tia AB lấy điểm F sao cho AF-AC. Chứng minh rằng: a. BD DE b. ABDF-AEDC. c. F, D, E thắng hàng. d. AD 1 FC.
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Đọc và trả lời, giải thích rõ vì sao lại chọn đáp án đó Historians are torn when asked to identify the birth of American culture. Some suggest that it took root in Jamestown, arguing that as soon as there were white people in America, they were already uniquely American. Others argue that the culture did not really differ from European cultures until the First Great Awakening. They suggest that the religious revival that spread throughout the colonies made Americans aware of other English settlers in the New World. And, they continue, since this revival took place in a more public way than it did in England, it was the birth of American community. Still other historians place the origins of American culture on the battlefields of the French and Indian War. It is true that the conflict led indirectly to the American Revolution, which led, in turn, to America itself existing. However, it is a bit naïve to believe that violence can birth a peaceful culture. It is far more likely that a culture did not get created so much as slowly adapted and formed. --------------- Each of the following has been suggested as being responsible for the emergence of American culture EXCEPT A. the American Revolution B. the First Great Awakening C. the arrival of white settlers in Jamestown D. the French and Indian War

Win D. to C. on B. at 10. we are.... soccer. D. A. play plays 11. That is my father. A. he 12.1......... to school every day, A. walk C. to play B. playing **. is thirty years old. B. she D. her C. his D. to walk B. walks C. walking 13. My apartment is.... the first floor. A. at 14. Minh...... his face in the morning A. wash 15. She does...... homework in the evening. A. his 16 Mr Ha travels to Ha Noi A. from 17. I and Nam...... vollayball. A. play 18. Hello. .. are you? - fine, thanks. A. How 19. My father lives...... Le Loi street. A. in 20. There are four people...... my family. A. in D. in B. from C. on D. washing B.washes C. washs D. my B. her C. she plane. B. in D. by C. on B. watch C. listen D. do B. How many C. How old D. What B. on C. at D. to B. on C. from D. at III/ Read this passage carefully then answer the following questions His name is Minh. He teaches English in a big school in town. The school is not near his house so he travels to work by motorbike. He often leaves his house at 6.50 im the morning and goes home at 11.30. He has lunch at twelve o'clock. In the afternoon, he doesn't go to school, he reads books, watches TV and plays sports. He likes his job very

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