Vì tổng 3 góc của tam giác luôn bằng 180⁰ nên góc C là

180⁰-70⁰-50⁰=60⁰

Theo quan hệ giữa góc và cạnh đối diện:

Vì nên cạnh AC>BC>AB

VII. Rewrite the sentences, using the words given.

1. The distance from my house to Ha Noi is over 20 kilometers.

-> It’s...........................................................................................................................

2. My brother often watched TV in his free time last year, but he no longer does it.

-> My brother used........................................................................................................

3. People in the countryside will use much biogas in the future.

-> Much biogas..............................................................................................................

4. The ending of the film was quite moving.

- We were _____________________________________________________

5. Hoa was ill, but she could go to school yesterday.

- Although ____________________________________________________

6. When she was small, she often rode her bike to school.

-->She used ..........................................................................

7. He is very rich. However, he hates spending money.

- In spite of __________________________________________________

8. The film was made twenty years ago. Many people have enjoyed seeing it. (however)

__________________________________________________________________