user-avatar
ngvmanhct
2 năm trước
Bài 1: Cho tam giác ABC vuông tại A có AB=6cm, AC=8cm. M là trung điểm của BC. Qua M kẻ đường thẳng vuông góc với BC cắt đường thẳng AB, AC tại E và D a) Tính AM ? b) Tam giác BEC cân Bài 2: Cho tam giác ABC vuông tại A, phân giác BE, kẻ EH vuông góc với BC ( H ∈ BC). Gọi K là giao điểm của AB và HE. Chứng minh BE là đường trung trực của AH.
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

1.Choose the best answer a, b, c or d to complete the sentence. Question 6. Daisy is _______ social media. She spends lots of time on Facebook and Instagram. A:bored with B:addicted to C:tired of D:curious about 2.Choose the best answer a, b, c or d to complete the sentence. Question 8. My sister enjoys _______. She usually walks around the mall to look at the goods, but not buying anything. A:doing DIY B:window shopping C:going shopping D:hanging out 3.Choose the sentence so that it has similar meaning to the first one. Question 25. DIY skills aren’t as hard to learn as I think. A:DIY skills are easier to learn. B:I think DIY skills are easier to learn. C:DIY skills are easier to learn than I think. D:DIY skills are easier to learn as I think. 4.Choose the best answer a, b, c or d to complete the sentence. Question 7. On YouTube you can find many videos on _______ all aspects of your English. A:improving B:surfing C:taking D:working 5.Choose the word whose underlined part is pronounced differently from the others. A:enough B:found C:sound D:out 6.Choose the sentence so that it has similar meaning to the first one. Question 24. How about going window-shopping this afternoon? A:Will we go window-shopping this afternoon? B:What about to go window-shopping this afternoon? C:Shall we going window-shopping this afternoon? D:Shall we go window-shopping this afternoon? 7.Choose the sentence so that it has similar meaning to the first one. Question 23. What leisure activity does she like most? A:What does she like most? B:What activity does she like doing most? C:What’s leisure activity does she like most? D:What’s her favorite activity in her free time? 8.Read the passage carefully, then choose the correct answers. The latest addiction to trap thousands of people is the Internet, which has been blamed for broken relationships, job losses, financial ruin, and even suicide. Psychologists now recognize Internet Addiction Syndrome (IAS) as a new illness that could cause serious problems and ruin many lives. IAS is similar to other problems like gambling, smoking and drinking: addicts have dreams about the Internet; they need to use it as the first thing in the morning; they lie to their parents and partners about how much time they spent online; they wish they could cut down, but are unable to do so. A recent study found that many users spend up to 40 hours a week on the Internet. Some of the addicts are teenagers who are already hooked on computer games and who find it very difficult to resist the games on the Internet. Which of the followings is NOT true? A:Internet addiction can cause suicide behaviors. B:IAS is recognized as a new illness. C:Many Internet addicts spend more than 40 hours a week online. D:Teenagers who are hooked on computer games can suffer from IAS. 9.Choose the best answer a, b, c or d to complete the sentence. Question 5. How much time do you spend _______ leisure activities? A:for B:in C:on D:with 10.Mark the letter A, B, C or D to indicate the most suitable response to complete each of the following exchanges. Question 13. Mary: “Would you like to join our volunteer group this summer?” Peter: “……………………………………….” A:Yes, you are a good friend B:Thanh you so much! C:Yes, I’d love to. Thanks. D:Do you think I would? Giúp mình vs mìh đang cần gấp!!!

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