user-avatar
canhnamakashi
2 năm trước
BÀI 9 Cho vuông tại A, có AC = 12 cm, BC = 13 cm. Gọi I là trung điểm của BC, Trên tia AI lấy điểm K sao cho IA = IK. a/ Tính AB b/ Chứng minh từ đó suy ra là tam giác vuông. c/ Gọi M là trung đ của AC. Chứng minh MB = MK..
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Finish the second sentence in such a way that it means the same as the sentence printed before it. 1. The furniture was too old for us to keep. → It was ................................................................................................................................................... 2. Nobody has cleaned the streets this week. → The streets ........................................................................................................................................... 3. While mending the road, they accidentally blocked our water pipes. → They accidentally cut .......................................................................................................................... 4. He brought the umbrella along but it didn’t rain. → He needn’t ........................................................................................................................................... 5. While I strongly disapprove of your behavior, I will help you this time. → Despite ................................................................................................................................................ 6. The underground is quick and cheap. → The underground is ............................................................................................................................. 7. He was annoyed because his secretary came late to work. → He objected to ..................................................................................................................................... 8. Neil regrets having sold his car. → Neil wishes .......................................................................................................................................... 9. The child ran out because of the strange noise. → The strange noise ................................................................................................................................ 10. Immediately after his arrival, things went wrong. → No sooner ............................................................................................................................................ There is a mistake in the four underlined parts of each sentence. 1. Jason’s professor had him to write his thesis many times before allowing him to present it A B C to the committee. D 2. I think Helen is accustomed to work eight hours a day. A B C D 3. The more frequent you exercise, the greater physical endurance you will have. A B C D 4. Only when you have had a chance to know various occupations you will decide on your career. A B C D 5. I tried to do everything to contact John two weeks ago but so far I don’t receive his reply. A B C D 6. Most students were able of finding good jobs three to six months after graduation. A B C D 7. The letter was sent by special delivery must be important. A B C D 8. Because the torrential rains that had devastated the area, the governor sent the National Guard to A B C assist in the clean-up operation. D 9. My brother attends an university in the Midwest which specializes in astrology. A B C D 10. Although Mark has been cooking for many years, he still doesn’t know to prepare French foods A B C D in the traditional manner.

Chọn đáp án đúng nhất: 1. Using telepathy is a way _________ instantly by thought. A. to communicate B. communication C. communicating D. communicate Chia động từ trong ngoặc: 2. We must use our natural resources á economically as possible because they are not ___________ (limit) Hoàn thành câu: 3. All fights had to be cancelled as a ressult of the pilots' sudden strike. => Because 4. "How many planets are there in the Solar System, Nguyen?" (asked) => The science teacher 5. The storm destroyed his house completely and now he is living with his friends. (was) => His house 6. The science teacher said "Scientist in health care sector may develop a cosmetic powder which can help the skin cells grow again in the future" (might) => The science teacher said 7. Because the airport is located near our neighborhood, we must suffer from noise pollution every day. (if) => We wouldn't

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