cỏ là thức ăn của thỏ là thức ăn của

hình 2

q1 Last night, I didn't order milkshake because I wasn't thirsty

q2 How much time do you spend on math homework each day?

q3 Eating fruits and vegetables is the healthiest way to stay fit

q1 I'm fancy taking part in a clean-up event this month.

q2 The bookshelves are the same high as the windows.

q3 Why don't we collecting old plastic bottles and paper in our school.

q4 My friends and I go to the studio to practice dancing 

Q1: We 

q2: Her voice is as beautiful as a melody from a fairy tale.

q3: We have a school assembly in the school yard on monday.

ét tg ABC có

$\widehat{BAC}=180^o-\widehat{ABC}-\widehat{ACB}$ (tổng các góc trong của 1 tg $=180^o$ )

$\Rightarrow \widehat{BAC}=180^o-70^o-30^o=80^o=\widehat{ACD}$

Hai góc $\widehat{BAC}=\widehat{ACD}$ ở vị trí so le trong => AB//CD

a/ Ta có

tg ABC cân tại A $\Rightarrow \widehat{ABC}=\widehat{ACB}$ (góc ở đáy tg cân) (1)

$\widehat{ABC}+\widehat{ABD}=\widehat{DBC}=180^o$ (2)

$\widehat{ACB}+\widehat{ACE}=\widehat{BCE}=180^o$ (3)

Từ (1) (2) (3) $\Rightarrow \widehat{ABD}=\widehat{ACE}$

b/

Xét tg ABD và tg ACE có

AB=AC (cạnh bên tg cân ABC)

$\widehat{ABD}=\widehat{ACE}$ (cmt)

BD=CE (gt)

=> tg ABD = tg ACE (c.g.c) => AD=AE => tg ADE là tg cân

Nếu bóng của hai cột đèn bằng nhau, tức là BC = EF

Suy ra, ABC = DEF (g.c.g)

Từ đó ta có AB = DE (hai cạnh tương ứng)

Vậy khi bóng của hai cột đèn bằng nhau thì độ dài hai cột bằng nhau

0,75+\(\dfrac{9}{5}\)(1,5 - \(\dfrac{2}{3}\))²

^{= \(\dfrac{3}{4}\)}+ \(\dfrac{9}{5}\) (\(\dfrac{3}{2}\) - \(\dfrac{2}{3}\))²

⁼ 

In the future, I wish I had a housework robot. It will be inside our house. My future work is quite busy so it would be great to have a housework robot to help me. It can help me with my household problems. In the future I will have a family, the robot will help me take care of the kids. If I can't cook, I can ask it to cook for me. The housework robot will help me clean the house, feed the cat, and protect the house when I'm away....a lot of benefits when having it in the future. In the future, I hope that I will have one.