Giúp mk nhaaa!
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Khách
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7 tháng 5 2019
a)Xét \(\Delta\)ABD và \(\Delta\)AED:
AB=AE
BAD=EAD
AD chung
=>\(\Delta\)ABD=\(\Delta\)AED(c-g-c)=>BD=ED
AB=AE=>A nằm trên đường trung trực của BE
BD=ED=>D nằm trên đường trung trực của BE
Suy ra AD là đường trung trực của BE
b)FBD+ABD=180
DEC+AED=180
Mà ABD=AED
Suy ra: FBD=DEC
c)Xét \(\Delta\)BFD và \(\Delta\)EDC
BDF=CDE(đối đỉnh)
BD=ED
FBD=DEC
=>\(\Delta\)BFD=\(\Delta\)EDC(g-c-g)
LA
7 tháng 5 2019
a) ta có: tam giác ABE cân tại A ( AB = AE)
mà AD là phân giác góc BAE
=> AD vừa là phân giác, vừa là đường trung trực
=> AD là trung trực của BE
b) Gọi giao điểm của BE và AD là I
xét tam giác BDI và EDI
BD = DE ( DA là đường Trung trực của BE)
DI cạnh chung
BI = IE ( AD là trung trực của BE)
=> tam giác BDI = tam giác EDI ( C-c-c)
=> BDI = IDE
ta có FBD = BDA + BAD ( góc ngoài tam giác BAD)
DEC = ADE + DAE ( góc ngoài tam giác EAD)
mà BDA = EDA
BAD = EAD
=> FBD = DEC (đpcm)
chúc bạn thi tốt
7N
mn giúp mk với, mk cần rất là gấp, mn lm nhanh 1 chút giúp mk nhé, cảm ơn mn rất rất nhìu ạ !!!
2
DT
Đỗ Thanh Hải
CTVVIP
22 tháng 9 2021
Ex1 ko có verb à
Ex2
1 like
2 listen
3 wears
4 teaches
5 do
6 goes
7 comes
8 goes
9 watch
10 walks
11 is
12 washes
13 studies
14 wants
15 plays
16 buys
17 studies
18 tries
19 washes
20 cries
21 says
22 flies
23 don't have
PT
9 tháng 2 2021
Today, there are many hot issues that are being paid great attention by the whole society such as education, food safety and hygiene, continuous evils and especially traffic safety issues. Today's presentation will give you an understanding of this field. Traffic is the movement between vehicles such as motorcycles, cars, ships, planes ... on different distances, types of roads such as roads, railways, airways ... Participation and regulation of traffic Information is not easy because the amount of traffic is increasing, especially roads. The current traffic situation is ringing an urgent bell about human consciousness. One day, in Vietnam, there are dozens of accidents, even very serious accidents, especially on peak occasions such as festivals or Lunar New Year. Recently, public opinion is very pity for the strawberry caravan incident with eleven people killed. The joy of the whole family line suddenly turned into pain, the disaster struck everyone. One thing that is making us very indignant is the container incident that caused the catastrophic accident for people who stopped red lights. It is special that the driver has been confirmed to be positive for drugs. All someone's passing away from a traffic accident ultimately comes from the irresponsibility, indifference, and disregard for the lives of such people. Traffic accident not only kills a human's life, the biggest loss, but also causes great damage to material possessions. This is damaging to the economy, social disorder, making people worried and insecure and inhibiting the development of our country. Above all, the relatives of the ill-fated victims will suffer lasting damage, forever the scar that will never disappear. Therefore, ensuring traffic safety is very important and urgent. Everything works only when it comes from one's own consciousness. Let's obey the law when entering traffic from the smallest actions such as wearing a helmet, stopping the red light, not exceeding speed ... This will help you largely avoid the risk of having an unfortunate incident. However, you should also remember that helmets must be quality helmets, must be fitted with straps to take advantage of its effect. If you stop the red light, you must wait for the green light to go, not "one second fast, a lifetime slow" ... Besides, we also need to regularly organize propaganda activities to guide people to participate in communication. information properly, especially with the student's age. The concerned authorities, especially the traffic police forces, have to constantly patrol, control and frankly handle violation situations to set an example. Traffic safety is your way to contribute to society. It is not always economic support or charitable donations that help the country develop. First of all, you should be consciously protecting your life when in traffic. It's how you love yourself and keep others from worrying about you. And people have everything. Your body is cold, healthy is still abundant, you can work, make a lot of money and fulfill your dreams.
16 tháng 6 2021
Nick: Chào Phong.
Phong: Ồ, chào. Bạn đã đánh thức mình đấy Nick.
Nick: Nhưng 10 giờ rồi đấy. Chúng ta hãy ra ngoài chơi.
Phong: Không, đừng rủ mình. Mình nghĩ rằng mình sẽ ở nhà và chơi Zooniverse trên máy tính.
Nick: Cái gì? Hôm nay là một ngày đẹp trời. Thôi nào! Bạn đã ngủ đủ rồi. Chúng ta hãy ra ngoài làm gì đi - nó lành mạnh hơn.
Phong: Làm gì hả Nick?
Nick: Chúng ta đi bơi đi? Hay đạp xe? Chúng đều rất tốt cho sức khỏe.
Phong: Không, mình không muốn.
Nick: Cậu trông không khỏe đó Phong, cậu ổn không?
Phong: Mình cảm thấy buồn. Mình ăn thức ăn nhẹ mọi lúc, vì thế mình đang lên cân.
Nick: Vậy là càng thêm lý do để đi ra ngoài.
Phong: Không, Nick. Hơn nữa, mình nghĩ mình bị cảm - mình cảm thấy yếu ớt và mệt mỏi. Và, mình có thể bị cháy nắng bên ngoài.
Nick: Mình sẽ không chấp nhận câu trả lời không. Bây giờ mình sẽ đến nhà cậu!
L
27 tháng 4 2023
3.How long do you stay in Germany?
4.What do they do during the holidays?
5.Wil he get married next year?
6.When does she takes her exams?
7.Wil we have lunch in a pub?
8.Will you visit your family soon?
9.How do they travel to Prague?
10.Does she look for a new job?
11.Why do they sell their house?
12.Wil your parents retire next year?
1, Nick's hobby is collecting stamps . He is a stamp collector .
2, Hoa is very creative and she paints very well .
3, My uncle usually takes a lot of beautiful photos .
4. I think collecting old bowls is a very boring hobby. (BORE)
5. You can use carved eggsshells as decoration in your house. (DECORATE)
6. I reading books because it .....widen...... my knowledge. ( WIDE )
7. Model making is a .....wonderful....... ways of spending time. ( WONDER )
8. Reading books can also develop our ...imagination...... ( IMAGINE )
9. That girl can use leaves to make ....musical........... sounds. ( MUSIC )
10 You should choose a hobby because it will give you ......pleasure............. and help you relax. ( PLEASE )