Cho tam giác ABC vuông tại A. Kẻ đường cao AH. Từ H kẻ HD vuông góc AC, HE vuông góc AB. Gọi M, N lần lượt là trung điểm của các đoạn thẳng HB, HC. Chứng minh tứ giác DEMN là hình thang vuông. Giúp mk vs mk đang cần gấp =((( p/s, vẽ hình giúp mk lun nhaaa. mk cảm ơn

Các câu hỏi liên quan

MN GIÚP MK VS MK ĐANG GẤP LẮM Ạ V. Choose the correct answer A, B, C , or D to complete the letter. Thanks very much for your email. It was fun to read about the places you find interesting. I (1) ______ like going to museums in my free time. There are several museums in my city, but I like the Museum of Fine Arts the most. I love art, so (2) ______ I have free time, I go to this museum. There's a great mix (3) ______ art from across the eras, including some really impressive modern Vietnamese paintings. What I especially like about the museum is that (4) ______ of its galleries have an introduction in Vietnamese, English, and French. It (5) ______ that I can learn lots of English while enjoying the art works. Another place of interest that I love is the (6) ______ park. It’s near my house, so I go there almost every day. Sometimes I go for a walk around the park with my mother. Sometimes I choose a beautiful place in it to sit and draw some sketches. And sometimes I just sit (7) ______ a bench, doing nothing, just watching people passing by. It’s really relaxing. I hope someday I’ll have a(n) (8) ______ to visit your National Portrait Gallery and Hyde Park. Until the next email, 1. A. don’t like B. interested in C. also D. will 2. A. because B. though C. that D. when 3. A. in B. of C. on D. with 4. A. all B. one C. none D. not 5. A. means B. shows C. proves D. tells 6. A. locality B. small C. area D. local 7. A. in B. at C. on D. with 8. A. chance B. opportunity C. time D. choice