a: góc x'Oy+góc xOy=180 độ

=>góc x'Oy=180-130=50 độ

b: góc tOt'=góc tOy+góc t'Oy

\(=\dfrac{1}{2}\left(\widehat{xOy}+\widehat{x'Oy}\right)=\dfrac{1}{2}\cdot180=90^0\)

yukvyuytfy

viết bản kiểm điểm à, nguy hiểm đó :), tui còn chưa bị một bản kiểm điểm nào

Chơi sao mà bị GV phát hiện là xui òi , mình chơi quài nhưng ko bao giờ bị phát hiện :)

https://vinatexcollege.edu.vn/vi/huong-dan-cach-viet-ban-kiem-diem-mau-chuan/

tham khảo đi

bài gì

bài j?

bài toán hình con cá lớp 7

mk lop 8

ĐỀ LUYỆN THI IOE LỚP 5

1. house / is / the city. / in / My

...............................................................................

2. Peter / go / on foot? / Does / to work

................................................................................

3. _ESULT

4. My mother gave me a _ _ _ _ _ _ _ yesterday.

5. We have English on Tuesday and Saturday. We have it ... a week.

A. once B. twice

C. two times D. three times

6. Go straight and Mai's house is ... your right.

A. at B. in
C. beside D. on

7. a shower / You should / take / twice / a week.

....................................................................................

8. an / orange. / is / That

..................................................

9. My father sometimes plays _ _ _ _ _ _ with his friends.

10. Remember to drink water everyday. It's good _ _ _ our health.

11. Choose the odd one:

A. sing B. play
C. draw D. yesterday

12. Make ... circles.

A. four B. a
C. for D. one

13. is / chicken. / favorite / My / food

.................................................................................

14. frogs / some / garden. / There are / in the

..................................................................................

15. I want to be a musician in _ _ _ future.

16. All of my friends watching cartoons _ _ TV.

17. She s going ... in the fall.

A. fish B. fishing
C. fishes D. to fish

18. Where is my cup of tea? – It's ... the kitchen.

A. in front of B. under
C. behind D. in

19. interesting / doing / We are / things. / many

...............................................................................

20. to school / I / usually / go / by bike.

................................................................................

21. Happy birthday to y_ _!

22. What subject are you good _ _ , Elisa?

23. I have ... on Monday. I the subject very much.

A. biology B. novel
C. education D. science

24. Choose the word that has the underlined part pronounced differently:

A. hour B. house
C. hen D. hot

25. to learn / many interesting things / I / about animals. / love

......................................................................................

26. usually / play / Trinh and Thang / table tennis / together.

.........................................................................................

27. We are having _ break now.

28. There are many cows in the _ _ _ _ _ _ _ of my family.

29. Hoa was very surprised when she looked at ... in the mirror.

A. she B. hers
C. herself D. her

30. Choose the word that has the underlined part pronounced differently from the others:

A. season B. weather
C. week D. beach

31. activities in / a lot of / interesting / There are / the festival.

.....................................................................................

32. has / and / a son. / a daughter / Mrs Hanh

.......................................................................................

33. Don't forget to post the letter _ _ _ me.

34. After dinner, my mother checks my homework b_ _ _ _ _ bedtime.

35. I ... born on November 17th.

A. was B. were

C. am D. is

ghi đáp án rồi thì xin làm gì