cho đường tròn (o) đường kính ab . Qua điểm I cảu bán kính OB kẻ dây CD vuông góc với ab .Kẻ dây CE song song với AB .Chứng minh rằng a/ AE=BC=BD b/ E,O,D thẳng hàng c/ tứ giác ABED là hình chữ nhật

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1. A. listened B. stayed C. opened D. wanted 2. A. frustrated B. relaxed C. embarrassed D. depressed 3. A. multicultural B. conduct C. stuck D. fabulous 4. A. what B. where C. whole D. why 5. A. meat B. reading C. bread D. seat 6. A. writes B. makes C. takes D. drives 7. A. never B. often C. when D. tennis 8. A. needed B. watched C. stopped D. talked 9. A. ethic B. thanks C. these D. birthday 10. A. open B. doing C. going D. cold 11. A. out B. round C. about D. would 12. A. listened B. stayed C. wanted D. played 13. A. humor B. history C. hour D. hobby 14. A. there B. thank C. thirsty D. youth 15. A. clothes B. matches C. colleges D. churches 16. A. worked B. naked C. liked D. looked 17. A. sunbathe B. father C. theater D. weather 18. A. option B. information C. question D. invitation 19. A. stamps B. rulers C. cats D. books 20. A. try B. my C. sky D. study 21. A. sound B. round C. about D. could 22. A. fixed B. watched C. missed D. played 23. A. humor B. history C. honest D. hobby 24. A. they B. thank C. thirsty D. youth 25. A. clothes B. washes C. changes D. watches 26. A. watched B. stayed C. liked D. looked 27. A. these B. father C. theater D. weather 28. A. nation B. information C. question D. pollution 29. A. stamps B. plays C. wants D. books 30. A. decided B. played C. wanted D. provided 31. A. city B. cathedral C. central D. cinema 32. A. treat B. clean C. great D. beach 33. A. clean B. cook C. celebrate D. candy 34. A. spring B. visit C. present D. season 35. A. chat B. teacher C. chocolate D. chemistry