Bài 3:
Cho ∆ ABC vuông ở B có Â = 60 tia phân giác góc BAC cắt BC ở D kẻ DH vuông góc với AC ( H thuộc AC ) chứng minh 
a/ AB = AH và AD ⊥ BH
b/ HA = HC 
c/ kẻ CH vuông góc với BD ở H lấy điểm F trên tia BD sao cho H là trung điểm DF chứng minh rằng góc CFB = góc ADB
d/ so sánh AD và DC
    CF và BC So sánh AD và DC; CF và BC.

làm hộ mình bài 10 thôi nhé <3 

3. People / use / will / cars / driverless / the / future / in /. /

4. The roads / narrow / are /. / Therefore, / happen / always / traffic jams /. /  

1. Biogas / for fuel / will be / in homes / for transport / and / used /. /

2. The ending / the movie / very / of / was / moving /, / so / cried / I / a lot /. /

IX. Finish each of the sentences in such a way that it means exactly the same as the first sentence.

1. How far is it from your school to the public library?

-> What is…………………………………………………………………………………………?

2. In spite of his tiredness, Nam wanted to watch the film.

-> Although………………………………....……………………………………………………...

3. People will spend a lot of money on heating next year.

-> A lot of money will.....................................................................................................................

4. The Elephant Race Festival will be held in Don Village next year. (Write a question for the underlined part)

-> ………….........................................…………………………………………….……..