Bài 4. Cho hai đường thẳng AB và CD vuông góc với nhau tại O. Tia OM là tia phân giác
của góc BOC. Tính số đo của góc AOM.
Bài 5. Cho góc AOB có số đo là 150◦
. Vẽ vào trong góc này các tia OM và ON sao cho
OM ⊥ OA và ON ⊥ OB.
a Chứng tỏ rằng AON ’ = BOM ÷. b Tính số đo góc MON ÷.
Bài 6. Cho đoạn thẳng AB dài 6 cm. Hãy vẽ đường trung trực của đoạn thẳng ấy. Nêu rõ
cách vẽ.
Bài 7. Cho góc bẹt xOy. Trên cùng một mặt phẳng bờ xy, vẽ tia Oz. Vẽ tia phân giác Oa
của góc xOz, tia phân giác Ob của góc zOy. Tia Oa và Ob có vuông góc với nhau không?
Vì sao?
Bài 8. Cho hai tia Ox và Oy vuông góc với nhau, Oz là tia phân giác của góc xOy, tia Ot
là phân giác của góc xOz. Tính số đo góc xOt và yOt.
GIÚP MÌNH VỚI SÁNG NAY HỌC RÙI HUHUHUHUHU
:((((((
. ĐÂY LÀ CÂU HỎI CỦA MÌNH CẦN CÁC BẠN GIÚP LUÔN, GẤP LẮM HU HU HU Rewrite the sentences so that the maening stays the same:
1. This building is higher than that building.
* That building .......................................................................................
2. No one in my class learns better than Ba.
* Ba learns............................................................................................
3. To learn English is not easy.
* It is .....................................................................................................
4. The film is boring.
* What a ................................................................................................
5. This man drives carefully.
* This man is a ......................................................................................
6. She is a good English teacher.
* She teaches ........................................................................................
7. I like apples, Lan likes apples.
* I like apples so ....................................................................................
8. How long is that table?
* What is the ...........................................................................................
9. How much is the green dress?
* How much does ...................................................................................
10. Nam doesn't like Math. I don't like it.
* I don't like Math neither .......................................................................
Choose the suitable word to fill in each blank:
more , | inside, | popular, | ago, | all, | until, | Older, | few, | today, | with |
Thirty years (1) ......................... in Vietnam, very (2) ........................ people had TV sets. These owners were very (3)......................... After dinner, their neighbors gathered both (4).......................... and outside their houses. Some watched through the windows.
(5) .................evening, they sat and watched the black and white programs. The (6) ........................ people might sleep a little and the children might play (7) .......................... their friends, but no one went home (8) ...................... the TV programs finished. Time has changed. (9) ......................., many families have TV sets. People sit in their own living rooms and watch TV. Life is (10) ..................... comfortable now, but many neighbors don't spend much time together any more.
VI. Reorder the words to make meaninful sentences:
1. house / is / the post office / far / it / how / to / Lan's / from?
........................................................................................................................................
2. Mai / unhappy / her / very/ because / she / patents / is / misses / much.
........................................................................................................................................
3. who / in / the / is / your / group / tallest / person.
........................................................................................................................................
4. go / that/ lake / swimming / let's / in.
........................................................................................................................................
5. for / Nga's mother / yesterday / wrote / her / a sick note.
........................................................................................................................................
6. you / the / wash / carefully / must / spinach.
........................................................................................................................................
7. he / the guitar / could / he / small / play / when / was.
........................................................................................................................................
8. my / prefers / TV / brother / watching / books / reading / to.
........................................................................................................................................
9. ago / very few / TV sets / Vietnam / people / in / had / thirty years.
........................................................................................................................................
10. works / than / hours / my / friend / do / fewer / I.
........................................................................................................................................