user-avatar
yeuhh1306
2 năm trước
cho tam giác ABC vuông tại A , trung tuyến AM. trên tia đối của tia MA lấy điểm D sao cho MA=MD a. chứng minh t/g ABDC là hcn b. Kẻ AH vuông góc BC tại H .Gọi N,E,F lần lượt là t/đ của AH,BH,DC .cm NEDF là hbn .tính góc AEF Giúp mk vs ạ chiều mk kt r .cảm ơn trc ạ
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Ex1: Choose the best answer: 1. Which word has the main stress diffrently from the others? A. volunteer B. charity C. melody D. calorie 2. Jack spend almost his time staring at his smart phone,............. is very short-sighted. A. and B. or C. but D. so 3. My father loved..............horse-riding when he was young. A. doing B. going C. playing D. taking 4. She feels itchy and her nose is running. She says she has............ A. headache B. toothache C. allergy D. flu 5. Jenifer says that she.........collecting dolls, but she..........in the future. A. will like/ won't continue C. likes/ continues B. likes/ won't continue D. will like/ continues 6. The Japanese eat a lot of rice, ...................they eat a lot of fish too. A. or B. but C. so D. and 7. My family has decided to use.............electricity by using more solar energy instead. A. more B. less C. much D. fewer 8. I........playing board games interesting because I can play them with my friends. A. find B. think C. say D. tell 9. A. (c)url B. (k)een C. (c)ity D. coo(k) 10. I.............Nha Trang when I was a child. A. visit B. visited C. will visit D. have visite

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