Cho tam giác ABC có AB=AC . Tia phân giác của góc BAC cắt cạnh BC tại H . Gọi M và N thứ tự là trung điểm của cạnh AB và AC . Trên tia đối của tia MH lấy điểm D sao cho MD =MH . Trên tia đối của tia NH lấy điểm E sao cho NH=NE . Chứng minh rằng : a) Tam giác ABH = tam giác ACH b)AE //BC Ba điểm A,D,E thẳng hàng VẼ DÙM MÌNH HÌNH VẼ NHA

Biết 21 lít dầu hỏa nặng 16,8 kg hỏi 19 kg dầu hỏa có chứa đủ vào can 23 lít không Giải thích nữa nhé

từ công thức: năng suất + chất lượng= hiệu quả điều gì xảy ra khi -làm việc chỉ chú chất lượng bỏ qua năng xuất -làm việc chỉ chú năng xuất bỏ qua chất lượng

giả sử em là 1 người tuyên truyền về các vấn đề xã hội như hạn chế sd bao bì ni lông, ko nên hút thuốc lá, dân số tăng nhanh và cần giảm.em sẽ nói j để thuyết phục mn cùng hành động đúng. giúp mk vs đg cần gấp lắm hứa sẽ vote 5 sao CẢM ƠN TRƯỚC.CHỤT CHỤT

Giúp mình với nhanh nhé ! Mình sẽ chọn câu trả lời hay nhất 1. Chứng tỏ rằng : a. Nếu cd chia hết cho 4 thì abcd cũng chia hết cho 4 b. Nếu abcd chia hết cho 4 thì cd cũng chia hết cho 4

Ai thức giúp mình với bài6 và 7 thôi nha

Hãy trình bày đặc điểm cấu tạo của nhện NHANH NHÉ gửi ảnh cũng được ko chép mạng ạ

A. Listen and fill in the blanks: (1,0pt) REVSION 2 (NĐC) 1. I (1)_ 2. l've made many new friends, and I (2). 3. Volunteering is special to me (3) 4. It's (4) because I can make a different in our comunity. much more self- confident. I can help others. because I can see how happy the (5). B. Listen to the passage, then choose the best answer for each questions: (1,0pt) 6. Why did Jone's uncle want to come back ? A. Because it was too hot C. Because he was to tired 7.In the end join's family went to Peth A. by train 8. Who died when Jone's family were on holiday ? are when they learn. B. Because it was too far D. Both A and B B. by coach C. by car D. by plane A. his mother's father C. his father's mother 9. Most of Jone's family came back A. by train 10. Who in Jone's family had to go by train and car to Melbourne? A. his father A. Read the passage to answer the questions: (1,0pt) There are two things that make humans different from all other animals. They are language and music. Music is clearly different from language. However, people can use it to communicate especially their emotions. Like reading, writing and speaking music can express ideas, thoughts, and feelings. It can express one's hopes and dreams. Music is very much an integral part of our life. It is played during almost all important events and on special occasions and sets the tone for them. It adds joyfulness to the atmosphere of a festival and makes a funeral more solemn and mournful. Music lulls babies to sleep at night and wakes students up in the morning. Above all, music entertains. It makes people happy and excited. It delights the senses. In fact, music as entertainment has always been a big business. It is a billion difficult to imagine what our lives would be likewithout music. 11. What are the two things that make humans different from other animals? B. his mother's mother D. his father's father B. by ship C. by plane D. by car B. his uncle C. his parents D. his father and uncle dollar indusrty. It is 12. Why is music a powerful means of communication ? 13. How can music set a tone for events and special occasions ? 14. How can music entertain ? 15. Why has music always been a big business? B. Read the passage to choose the word (a,b.c,d) that best fits each og the blank spaces: Always maintain a queue while waiting (15). middle of the road. At the time of boarding a bus do not try to run or chasing the bus. Once you are inside the bus (16) Never try to (17). Avoid (18) of the driver and it could leads to a major (19)_ a bus. Never stand on queue on the a seat and hold firmly on the handrail if you are standing. an overcrowded bus. inside of a bus because your high – pitch noise may distract the attention accident. С. on C. take C. wait C. to shout D. about D. find D. board D. shouts B. to B. sit 16. A. for 17. A. hold 18. A. choose B. go B. shouting 19. A. shout

giải giúp mk dc ko ạ mk đang cần gấp lắm!!!

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