Các góc đồng vị ở hình vẽ sau là : góc A₁ và góc B₁ , góc A₄ và góc B₄ , góc A₂ và góc B₂ , góc A₃ và góc B₃ , góc A₄ và góc B₄ 

Các góc so le trong ở hình vẽ trên là : góc A₂ và góc B₄ , góc A₃ và góc B₁

Topic 1:

Hi Mai 

What are you going to do ? Are you free tonight ?

I'm going to play table tennis at the sports center . Do you want to come ?

I'm going with Huyen . We can meet at 2:40 p.m . It costs 35 000 VND each person . They provide all the safety equipment , some water and juice . 

Let me know if you want to come

Bye

Mai Anh

1. His brother goes to the theater once a month

2. I usually store some onions on a basket in the kitchen shelf

1 . You shouldn't eat large meals before bedtime

2. It takes him two hours reading books about adventure

3. Would you like to buy tickets for the concert