2. ...  2 km between my house and my school.

3. ... about 200m from the park to the art gallery.

4. ... the distance from the bus stop to the zoo is about 1km.

5. ...the distance from the railway station to the supermarket is about 100m.

6. ...is it from Hue to Da Nang?

7. ...is it from Hanoi to Nam Dinh?

8. ...is it fromt he park to the cinema?

9. ...from your house to the cinema?

10. ... from the museum to the bus stop?

1. I have English on Tuesday, Wednesday, and Friday.

2. There are five rooms in my house.

3.I'm at the balcony.

4. My favorite "cái gì đó" is...

tick dung ho mik nha <333

1. more → as

2.less → least

3.not friendlier → not as friendy

4.less →  the least

5.more clean →  cleaner

6.more expensive → the most expensive

7.is easy → is as easy

8.best barbecue → the best barbecue

9.the most unusual → more unsual

10.are big → us as big

   As we all know, there are many great scientist around the world creating great invention everyday. These invention makes our life much easier and more interesting. Talking about invention ,have you ever heard of Thomas Edison. I think that all of us must know himm after all he is the father of light bulbs. Long ago, before the light bulb appeared, we people can't work late because it is dark so we can't see nothing. We had to work hard before sunset. But later on, they invented oil lamp, this helped bring the light to Earth, but this lamp is very dangerous. In 1879, Thomas Edison invented the light bulb. This was the greatest invention in the world. Now people can read books and do works in the evening. Thanks to Edison, our life is easier.

b) Ta có: Δ ECA = ΔDBA ( ý trên)

=) AD= EC (2 cạnh t/ ứng)

DB= AE (2 cạnh t/ứng)

=) AD+AE= EC+ DB= AE

Vậy EC+ DB= AE

Ta có; góc A₁+ góc A2+ góc A₃= góc xAy

A₁ +A₃= 180⁰ -90⁰= 90⁰   (1)

BD vuông góc với xy tại D (gt)

⇒ D= 90⁰

^Xét Δ BDA, có

D+ B+ A₃= 180⁰ (định lí)

90⁰ +B+ A₃= 180⁰

B+ A₃= 180⁰ -90⁰ =90⁰   (2)

Từ (1) , (2) ⇒ A₁+ A₃= B+ A₃ =90⁰

=) A₁= B

Xét Δ ECA và ΔDBA, có

E=D =90⁰

AC= AB (GT)

A₃= B( cmt)

Vậy, Δ ECA = ΔDBA ( cạnh huyền -góc nhọn)

1- X²= 3/4

Ta có: 1- X²= 3/4

               X²= 1- 3/4   

               X²= 1/4

=) X²= (1/2 )² hoặc X²= (-1/2 ) ² 

Vậy, Xϵ { 1/2 ; -1/2}

Theo em, người ta dùng chân thứ 3 đó để chống giật