user-avatar
Huuthuan1803
2 năm trước
Cho tam giác MNP vuông tại M có P=60 và cạnh MP=9cm . Tia phân giác của góc P cắt MN tại D . Kẻ DE vuông góc với NP tại E . a) Chứng minh : Tam giác MPD = Tam giác EPD . b) Chứng minh : Tam giác MPE là tam giác đều . c)Tính độ dài cạnh NP.
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

C. Exercises: I. Choose the most suitable word or phrase for the blank: 1. I liketo listen to rock music. A. love B. want C. enjoy D. hate 2. She prefers ___________________ part in sports. A. take B. to take C. taking D. both B & C 3. That sounds ___________________ to me. A. good B. well C. cheaply D. usually 4. His mother wanted him ___________________ some bread. A. bought B. to buy C. buying D. to buying 5. I’m not busy on Wednesday. A. tired B. late C. at home D. free 6. I waited for them ___________________ they arrived. A. after B. because C. when D. until 7. Her car is ___________________ mine. A. as big as B. as big so C. so big so D. so big as 8. She is going to listen ___________________ the radio. A. for B. of C. to D. on 9. ___________________ is a person who watches television. A. Contestant B. Viewer C. Member D. Worker 10. Her parents ___________________ to do other things. A. enjoy B. prefer C. take part in D. both A & B 11. TV viewers can ___________________ in some contests. A. take part B. join C. interested D. both A & B 12. Some people watch TV ___________________ the windows. A. in B. on C. through D. by 13. We ___________________ friends any more. A. are B. aren’t C. is D. isn’t 14. What kinds ___________________ program do you like? A. of B. from C. for D. to 15. “Pop music” is the short ___________________ of “popular music”. A. form B. word C. from D. world 16. We don’t have a TV ___________________ our place. A. in B. on C. at D. with 17. They prefer reading ___________________ watching TV. A. in B. to C. for D. on 18. What kinds of ___________________ do you like? – Cartoons. A. books B. pictures C. magazines D. films 19. ___________________ swimming? A. How about B. Let’s C. Why don’t we D. Shall we 20. Life is now ___________________ than it was. A. comfortable B. more comfortable C. comfortabler D. happy 21. Very few people ___________________ TV set many years ago. A. have B. has C. had D. to have 22. Let’s ___________________ a detective movie. A. see B. sees C. saw D. seeing 23. There will be a new film on ___________________ Sao Mai Theater tonight. A. on B. in C. at D. to 24. I’d like ___________________ the Beauty Summer. A. watch B. towatch C. watching D. will watch Ai nhanh nhất mình tick ạ

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