Cho tam giác ABC , tia phân giác của góc A cắt cạnh BC tại D . Qua D kẻ đường thẳng song song với AB , cắt AC tại E , qua E kẻ đường thẳng song song với AB , cắt AC tại E , qua E kẻ đường thẳng song song với BC cắt AB tại K . Chứng minh rằng : a, Tam giác AED cân b, AE=BK

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1. In that story, the Princce got _______________________to a poor girl. (MARY) 2. Some of my ____________________live in the countryside. (RELATE) 3. My brother has a wonderful ___________ of stamps. (COLLECT) 4. During his___________________________, the family lived on a farm. (CHILD) 5. The English course will start at the ______________________ of September. (BEGIN) 6. My sister is very _____________________and she paint very well. (CREATE) 7. My brother usually takes a lot of ______________________ photos. (BEAUTY) 8. Reading books and newspapers can also develop our _________________ (IMAGINE) 9. Where is the _____________________________ to the car fair? (ENTER) 10. She was ____________________when she did the English test badly. (HOPE) 11. The weather was nice so we had a very_________________holiday. (PLEASE) 12. There are many people living in______________________now in the world. (POOR) 13. Air______________________ is a big problem in most big cities. (POLLUTE) 14. ReaTthe carefully before you use this machine. (INSTRUCT) 15. It's difficult to find__________________at busy times in my city. (ACCOMMODATE] 16. There are over 30______________________in the talent contest. (COMPETE) 17. It is______________________to eat too much sugar and fat. (HEALTH) 18. There are many cultural _____________ between his country and mine. (DIFFER) 19. The______________________he gave last night was wonderful. (PERFORM) 20. My new teacher is beautiful with ______________________smile. (LOVE) 21. He finds English______________________but maths difficult. (FASCINATE) 22. It was a long, slow film. I nearly died of______________________ (BORE) 23. These birds have a _______________ability to find their way home. (NATURE) 24. You are too_______________with him. He is only a child. (PATIENCE) 25. She always listens ________________to what the teacher is saying (ATTENTION) 26. Each of my classmates has a____________________character. [DIFFER] 27. "The lost shoe" is one of the __ __________________stories I like best. (TRADITION) 28. Are you____________________about your first day at school? (EXCITE) 29. Is there anything____________________on TV tonight? (INTEREST) 30. What is the name of the____________________who is singing on stage? (SING) 31. My sister is a stamp____________________. (COLLECT) 32. Her sudden____________________must be a shock to everyone. (DIE)