cho góc AOB=150 độ về phía ngoài của gócAOB vẽ 2 tia OC vs OD theo thứ tự vuông góc với OA , OB . gọi Ox là tia phân giác của góc AOB , Oy là tia đối của tia Ox .

a, chứng minh Oy là tia phân giác của góc COD .

b, so sánh góc xOC vs góc yOD .

mk mong các bn có thể giúp mk giải nhanh nhất có thể vì ngày mai là mk phải nộp cho cô .

Rewrite rite these sentences 

1. Would you like to go camping with us nest Sunday ?

--> What about .............

2. My grandpa likes watching TV better than going for a walk 

--> My grandpa prefers .............

3. Why don't we join them on Suoi Tien Park .

--> Let's ..............

4. Playing after dinner is more boring than meetings friends.

-->Meeting friends...............

5. Does she like cowboy movies ?

-->Is she ...................

6. All banks and stores have video cameras .

--> There are ..............

7. She doesn't like the noise and the busy roads in the city .

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

8.Children should spend a little time on playing video games.

-->Children shouldn't.......................

9. What about going to the arcade after school ? 

-->Would you like..........................

10. He is a careless taxi driver .

--> He....................

Rearrange the following sentences in the correst order

1. mother / his / he / letter / sent / a / yesterday .

2. morning / you / get up / did / this / early ? 

3. did / cold / you / have / a / when .

4. prevent / you / how / a / can / cold / hepl ?

5. everyday / exercises / do / morning / you / do ? 

6. have / this / what / did / you / time / morning / breakfast ?

7.now / feeling / you / how / are ?

8. did / man / the / where / from / come ? 

9. traveling / present / Mr . Minh / Ha Noi / is / at / to ? 

10 . city / world / which / the / biggest / the / is /in ?