user-avatar
tanlocconan1306
2 năm trước
cho tam giác ABC vuông tại A có AB=6cm, AC=8cm a) tính BC b) so sánh góc ABC và góc ACB c) trên BC lấy điểm H sao cho BH=BA vẽ đường thẳng qua H vuông góc với BC cắt AC tại D chứng minh tam giác ABD và tam giác HBD =>BD là phân giác của góc ABC d) hai đường thẳng BA và HD cắt nhau tại E chứng minh tam giác CDE cân
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Viết thư phản hồi: Note: You need to write a response to an e-mail that you will read. What your response needs to include is in the directions so make sure you also read the directions carefully. Dear Mike, I haven’t heard from you in a while. So, how are you? I am doing fine except being a little busy to find a new car for me. By the way, do you still like my car? Well, I am asking because I am actually planning to sell my current car, which you have always liked, and I thought that I would rather sell it to you instead of some strangers. With regard to the car I want to sell, it is still in good condition, even though I have driven it for almost 4 years. In fact, its engine is still very smooth, with almost no sound when it starts, while its air conditioning system is also very much intact. Besides, you will hardly find any scratch on its shiny exterior. And as for its interior, I have recently changed all the seat covers of my car, so it essentially looks like new. I guess that you have already got some sort of ideas about the condition of my car from my description, but if you are really interested to buy this car, let me know. Warm wishes, Williams Anderson

I. Choose the word which has different stress pattern. 1. A. Thoughtful B. delightful C. plentiful 2. A. Speechless B. faithful C. successful 3. A. Humanistic B. atomic C. ironic 4. A. Progressional B. Traditional C. technological 5. A. Referee B. refugee C. degree 6. A. Nepalese B. Senegalese C. Vietnamese 7. A. Zoology B. trilogy C. biology 8. A. Radiography B. geography C. photography 9. A. Transitive B. diversity C. definitive 10. A. Identity B. necessity C. sensitive 11. A. Unprofessional B. unsuccessful C. unreasonable 12. A. Imbalance B. impolite C. impossible II. Put the verbs in the brackets in the correct form of tense. 1. My uncle (just open)..................................a new internet shop on Trang Tien street 2. ....................Linh (watch)..........................TV at 9 o'clock last night? 3. While Mr Brow (work)........................in the garden, his wife (cook)...................... 4. Nam (not buy)......................a new computer since he (shell)...................the old one last month. 5. ..............Mr Phong (go)................to New York for ten days last year? 6. Last year we (install)................ordinary light bulbs, but now we (use)..................new ones. 7. When I (arrive)................at her house yesterday, she (do)........................her homework. 8. He (be)................very successful in his business since he (come)................here. 9. That exercise can't (do).................by all the students. 10. His car (repair)................at this time yesterday. 11. This room (clean)...................by my sister every day. 12. ........................these toys (make)........................in China? 13. These story books (write)...........................by To Hoai in 1956. 14. Nam (award)........................a gold medal in the chess tournament last week. 15. Nothing (do).............................since Peter bought a computer last week. III. Rewrite the sentences below without changing their original meaning. 1. Radioactive pollution is very dangerous. It can cause abnormal growth.(since) ........................................................................................................ 2. Leaves are damaged. The tree cannot get enough food energy to stay healthy.(because) .......................................................................................................... 3. I don't have much money now, but I want to buy a house in Phu Cuong. ............................................................................................................... 4. Light pollution happens. There is a change in animals' living patterns. ................................................................................................................. 5. Acid rain is dangerous. Trees' leaves are damaged.(because of) IV. Put the verbs in brackets into the correct form. 1. Factories (not dump).....................waste into rivers if the government fine them heavily. 2. If the factory (continue).....................dumping poison into the lake, all the fish and other aquatic animals will die.

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