Cho nửa đường tròn ( O) đường kính AB, I là điểm chính giữa cung AB. Lấy điểm M trên cung AI. Vẽ tiếp tuyến tại M cắt tia OI tại D 
a) Chứng minh góc AOM = góc MDO 
b) Chứng minh góc MOA = 2ABM

a) Viết phương trình đường thẳng đi qua gốc tọa độ 0 và có hệ số góc là âm căn 3
b) Viết phương trình đường thẳng y = ax + b có hệ số góc là căn 2 và cắt trục tung tại điểm -3 
c) Viết phương trình đường thẳng y = ax + b (d). Biết (d) song song với (d`): y = -3x và đi qua điểm ( -1; 8)

Cho hình thang vuông ABCD góc A bằng góc D bằng 90 độ, AB bé hơn BC. Gọi I là trung điểm cạnh AD. Vẽ góc BIC bằng 90 độ

a) Chứng minh tam giác ABC đồng dạng tam giác DIC 
b) Chứng minh tam giác ABI đồng dạng tam giác IBC 
c) chứng minh BI và phân giác góc ABC

Cho các oxit sau: CO₂, SO₂, P₂O₅. Viết phương trình phản ứng của các oxit đó với nước và gọi tên sản phẩm tạo thành?

37. Sydney/ most populous city/ Australia/ but/ not/ capital.
A. Sydney is most populous city in Australia but not the capital.
B. Sydney is the most populous city in Australia but not the capital.
C. Sydney is the most populous city in Australia but not capital.
D. Sydney is the most populous city in Australia but is not the capital.
38. English/ official/ language/ Malaysia/ Indial and/ many/ other countries.

A. English is a official language in Malaysia, India, and many other countries.
B. English is an official language in Malaysia, India, and many other country.
C. English is an official language in Malaysia, India, and many other countries.
D. English is the official language in Malaysia, India, and many other countries.

39. If/ he/ my friend/1/ invite him/ birthday party.
A. If he was my friend, I would invite him to my birthday party.
B. If he wasn't my friend, I would invite him to my birthday party.
C. If he were my friend, I would invite him at my birthday party.
D. If he were my friend, I wouldn't invite him to my birthday party.

40. Her house/ decorate/ by/ famous / artist/ last year.
A. Her house was decorated by an famous artist last year.
B. Her house was decorating by a famous artist last year.
C. Her house decorated by a famous artist last year.
D. Her house was decorated by a famous artist last year.

Complete each of the following sentences with the right forms of the verbs shown in brackets.

1. He suggested that I___________ ready by eight o'clock. (to be)

2. We request that she___________ the window. (to open)

3. They demanded that he___________ the room. (to leave)

4. I will ask that she___________ me. (to accompany)

5. They recommended that he___________ to Bermuda. (to fly)

6. The request that we___________ ready to leave at six is a nuisance. (to be)

7. The recommendation that she___________ a holiday was carried out. (to take)

8. It is necessary that you___________ able to come with us. (to be)

9. They asked that we___________ standing. (to remain)

10. The requirement that he___________ work will be hard to meet. (to find)

11. It is important that he___________ everything he can. (to learn)

12. The demand that she___________ the report has been carried out. (to complete)

13. I wish I___________ the answers. (not to lose)

14. They wished they___________ the appointment. (not to forget)

15. He will wish he___________ us the book. (to show)

16. Will they wish we___________ them some food? (to give)

17. We wish it___________ yesterday. (to snow)

18. She wished she___________ the window. (not to open)

19. I wished I___________ the news. (to hear)

20. You wish you___________ what to do. (to know)

Cho tam giác ABC có BC= 9cm, AC= 10cm. Lấy G và H trên AC sao cho AG=CH=4CM, điểm D thuộc BC sao cho BD= 3cm

a) Chứng minh DH// BG

b) Gỉa sử DH= 5cm. Tính số đo đoạn BG

c) Tính số đo đoạn EB