Cho tam giác ABC có AB=AC. Trên các cạnhAB, AC lấy các điểm D,E sao cho AD=AE. Gọi O là giao điểm của BE và CD. Chứng minh rằng:

a) góc ABE= góc ACD

b) OD=OE, OB=OC

41. Nha Trang is considered as one of the most beautiful tourist hubs in Viet Nam because : It has beautiful beaches and clear ocean water with mild temperature all year round.

42. According to the text, Diamond Bay is the name of a/an island.

43. The Pacific Coast Highway of Vietnam referred to Tran Phu Street in Nha Trang.

44. The word "major" in line 6 is closest in meaning to main.

45. Arccording to the text, which of the following statements is NOT true ?

A. The Hon Tre Island (Bamboo Island) is not on the main land of Nha Trang.

1. When you come back home i will be sleeping in my bed.

2. In a few day's time we will be lying on the beach.

3. I'll call Jim at six. He will be working in his office then.

4. I'll tell him. I will be seeing him on the train as usual.

5. We can't meet you on Saturday. We will be decorating our house at the weekend.

6. In a ten years' time most people will be using electric cars.

7. I'll come at one o' clock. OK, I will be waiting for you.

8. It won't be easy to get in. The warden will be watching the gate closely.

9. Will you help me tonight ? Sorry, I will be listening to the concert on the radio.

10. This time tomorrow my sister will be taking her entrance exam.

We like the film very much. The character are unforgettable and plot is gripping.

Cho tam giác ABC cân tại A và tam giác đều BCD (D và A nằm phía đối với BC ). Tính số đo góc BDA.

Trả lời:

1. I used to go to bed early when I was at primary school.

2. It is about three kilometres from my house to the supermarket.

3. Cell phones used to be expensive but some of them are cheap now.

Trả lời: My mom used to wash clothes by hand.