Cho tam giác ABC nhọn ( AB khác AC ) nội tiếp (O) . Gọi I là tâm đường tròn bàng tiếp góc BAC của tam giác ABC . Đường thẳng AI cắt BC tại D và cắt (O) tại E . ( E khác A)
a) CM : E là tâm đường tròn ngoại tiếp tam giác IBC
b) Kẻ IH vuông góc với BC tại H . Đường thẳng EH cắt (O) tại F ( F khác A ) . CM : AF vuông góc với FI
c) Đường thẳng ED cắt (O) tại M (M khác F) , đường thẳng IM cắt (O) tại N ( N khác A ) . Đường thẳng qua O song song với FI cắt AI tại J . Đường thẳng qua J song song với AH cắt IH tại P . CM : N ; E ; P thẳng hàng 

Rewrite as directed

1. It would be nice to be able to fly.                     

-> I wish …………………………………………….

2. I wish I hadn’t heard that.

-> I’d rather you…………………………………

3. Everyone wished they had listened more carefully to the lecture.

-> Everyone regretted ………………………………………………………….

4. Unfortunately I’ve got to work late tonight.

-> I wish ……..

5. Is it better for me to leave?

-> Would you ………..

6. It’s a pity I can’t borrow your car.

-> I wish you would…………

7. We really must discuss this again.

-> It’s important that …………

8. It’s a pity you were driving so fast.

-> I wish you ………….

9. May the President live a long time.

-> Long ….

10. Jack prefers me not to say anything about the missing money.

-> Jack would rather ………..

Rewrite using the word given in CAPITAL

1. Do you ever regret not going to university?                          WISH

-> ………………………………………………

2. I should really be leaving.                                                     TIME

-> ………………………………………………

3. I’d rather have beer than wine                                              PREFER

-> ………………………………………………

4. Jack doesn’t know all the answers, though he pretends so.   ACTS

-> ………………………………………………

5. I’d love to be able to go with you to the opera.                     WISH

-> ………………………………………………

6. I wish I hadn’t sold that old painting.                                   PITY

-> ………………………………………………

7. It would be better if you didn’t stay long.                                       RATHER

-> ………………………………………………

8. The management insisted on our wearing dark suits.             WEAR

-> ………………………………………………

9. Why do you have to complain all the time?                          WISH

-> ………………………………………………

10. I don’t want to go to the meeting.                                                RATHER

-> ………………………………………………