user-avatar
Tamle1980
2 năm trước
Cho tam giác abc điểm m là trung điiểm BC . tia phân giác của góc AMB cắt AB tại K tia phân giác của góc AMC cắt AC tại D a, Cm AM / MB = AD/DC b, Cm Ak/BK = AD /DC và DK // BC c gọi E là giao điểm AM và KD .Chứng minh E là trung điểm KD d, KD = 10cm , KA/KB=5/3 . Tính BC Cac bn giup mik can gap
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

V. Complete the conversation with the correct form of the adjectives in brackets. 1. A: Was it a good film? B: No, it wasn’t very (interest) __________. In fact, it was very (bore) ___________. 2. A: I’m always very (tire) _________ after a day at work. I can’t do anything in the evening. B: Why don’t you watch a film? A: I always fall asleep. Sometimes, I put on the most (excite) ___________ film that I really want to see but I always fall asleep. 3. A: I’m an actor. Acting is a very (tire) _____________ job. It isn’t (relax)_____________ at all. Are you (relax) _______________? B: No way. I’m a worker. 4. The “Spy Returns” is a very (excite) __________ film about a wealthy man who visits Italy. 5. They were (disappoint) ____________ when they read the result. 6. Do you feel ( attract) _____________ to this kind of job? 7. The (tire) ___________ horse was drinking water. 8. I like eating (boil) ______________ eggs. 9. Mr. Smith seems quite (satisfy) _____________ with his new job. 10. Mary appeared with a (please) ______________ smile. Question VI: Make one sentence from two. Use the word(s) in brackets in your sentences. 2. They have very little money. They are happy. In spite of ....................................................................................................................................... 3. My foot was injured. I managed to walk to the nearest village. Although ........................................................................................................................................ 4. I enjoyed the film. The story was silly. In spite of ....................................................................................................................................... 5. We live in the same street. We hardly ever see each other. Despite .......................................................................................................................................... 6. I got very wet in the rain. I was only out for five minutes. Even though ..................................................................................................................................

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