user-avatar
anne2003
2 năm trước
Cho tam giác ABC cân tại A. Trên tia đối của tia BC lấy điểm D, trên tia đối của tia của tia CB lấy điểm E sao cho BD=CE. Kẻ BHvuoong góc với AD tại H, CK vuông góc với AE tại K. Hai đường thẳng HB và KC cắt nhau tại I. Chứng minh tam giác BIC cân
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

I. Complete the second sentence so that it has the similar meaning to the first one. 1. It was difficult for Liz to eat with chopsticks. -> Liz didn’t ................................................. 2. Mary feels comfortable to look at the photo of her family. -> Looking at............................ 3. Students don’t have to wear uniforms at all time-> Uniforms ..................... 4. Be sure to lock the door before you leave. -> Don’t…………………………………...….. 5. Can’t you do better than that? -> Is that……………………………………………..…….? 6. How far is it from your house to your school? -> What is………………….………..……? 7. The roads are very clean -> How ……………………………………………..………..….! 8. Walking is the most popular activity at my school. -> Other activities are …………..……

giúp mình với mình đang cần gấp 1. An / A.......................is used to check people’s eyesight. A. eye-chart B. eyeglass C. stretcher D. eye-shade 2. Hoa has just burned. She has to use a towel or handkerchief to cover the........................... A. leg B. eyes C. wound D. hand 3. He always uses a.............................because he has a broken leg A. stretcher B. crutch C. scale D. wheelchair 4. Her head is bleeding very badly but she is.......................... A. conscious B. unconscious C. happy D. sad 5. .......................is a type of bed used for carrying the sick or injured people A. Ambulance B. Bandage C. Stretcher D. Crutch 6. The girl fell.......................her bike and hit her head......................the road A. of – in B. off – in C. off – on D. of – on 7. “I promise I won’t be late for school” - ................................ A. Yes, please B. That would be nice C. I hope so Tùy chọn 4 D. I’m afraid not 8. Leave the victim........................flat and don’t let him.........................cold A. lying – to become B. lying – become C. lie – to become D. to lie – to become 9. She promises...........................me up at 7.30. A. will pick B. to pick C. picks D. A & B are correct 10. She said softly so as...............................the baby up A. didn’t wake B. to not wake C. not to wake D. not waking II. CHANGE THE SENTENCES INTO PASSIVE 11. John collects money. 12. Anna opened the window. 13. They have opened a new shop 14. Rick has interviewed the lady 15. Her mother is preparing the dinner in the kitchen 16. We should clean our teeth twice a day 17. How many languages do they speak in Canada? 18. Are you going to repair those shoes? 19. Did Mary buy this beautiful dress? 20. I won’t hang these old pictures in the living room

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