Cho hình thang cân ABCD (AB//DC) có góc ADC = 60 độ ; AD = ½ DC. Gọi E là trung điểm của CD, BE cắt AC tại I.

a) Tính số đo góc ABC.

b) Chứng minh ABCE là hình bình hành.

c) Chứng minh AC ⊥ BE

cho hình thang ABCD đáy AB // CD gọi M là trung điểm của AC , ME cắt BC tại N biết AB = 7cm , ME = 4cm

a) chứng minh MN là đường trung bình của hình thang

b) tính DC và MN

giúp mik vs mik đg gấp :((((

Part 1: You will hear 5 short conversations. Choose the best answer. (5 points )

 Example:    0 What time is it?        

1. How does the man travel to Liverpool?

2. Which bill has just arrived?

3. What will they do tomorrow afternoon ?

4. How did the man hear about the fire?

5. What time did Mr.Thompson ring?

V. Write “a/ an/ Þ/ the” to fill in the blank

1. I have to wear ______________ uniform when I go to school.

2. I asked Mr. Brown to keep ______________ eye on your house when we were away.

3. The English test was just ______________ piece of cake to me. I didn’t worry much about it.

4. ______________ police suspect a local gang.

5. This is  ______________ expensive restaurant. We should find another one.

6. Picasso was ______________ artist.

7. He is ______________ honest man.

8. I study at ______________ small university in London.

9. We used to live ______________ city centre.

10. Are you ______________ teacher?

11. It takes me ______________ hour to get to work.

12. My cousin is ______________ surgeon.

13. It looks like it’s going to rain. Do you have ______________ umbrella?

14. I have ______________ one year old daughter.

15. Singer Justin Bieber comes from ______________ ordinary family.

16. These days Angelina Jolie enjoys ______________ life ______________ Hollywood film star.

17. My brother lives in ______________ apartment in ______________ city centre.