Bài 1: Cho tam giác MNP có MN = 12cm, MP = 15 cm, NP = 18 cm. Trên các cạnh MN, MP lần lượt lấy R, S sao cho MR = 10cm và MS = 8cm. Tính độ dài đoạn thẳng RS

Bài 2: Cho tam giác AHB vuông tại H có HA = 4cm, HB = 6cm. Trên tia đối của tia HA lấy điểm C sao cho HC = 9cm. Chứng minh:
∆ AHB đồng dạng với ∆ BHC
∆ ABC vuông

Turn the following sentences into passive

1. I have heard her sing this song many times.

2. People saw him stole your car

3. The teacher is watching us work.

4. We won’t let you do that silly thing again.

5. The manager don’t make the employees work hard.

6. She advised me to sell that house.

7. He orders us to clean the floor.

8. Maria has the porter carry her luggage to her car.

9. Ellen always helps me to do all the difficult exercises.

10. My father waters the flowers every day.

Ex3. Change the following sentences into passive voice

1. They sell a special kind of tea here

2. They have searched all the cars and trucks

3. The English government put him in prison last year

4. Het parents will meet us at the station tomorrow

5. Mr Brown is holding a meeting in the hall