Bài 2: cho hình bình hành ABCD có AB>BC, phân giác của góc D cắt AB tại M,phân giác của góc B cắt CD tại N.c/m 

a,AM=CN

b,tứ giác DMBN là hình bình hành 

Bai1: cho hình bình hành ABCD.trên tia đối của tia BC lấy điểm E:BC=BE,trên tia đối của DC lấy điểm F:DF=DC.c/m

a,tứ giác EBDA là hình bình hành

b,A là trung điểm của EF

Bài1: Cho tam giác ABC đều,điểm M nằm trong tam giác ABC,đường thẳng qua M song song với AC cắt BC tại D,đường thẳng qua M song song với BC cắt AB tại E,đường thẳng qua M song song với AB cắt AC tại F . Chứng minh :

a,c/m các tứ giác BEMD,AFME,DMFC là các hình thang cân 

b,độ dài 3 cạnh của tam giác bằng độ dài 3 cạnh của tam giác nào 

Bài 1: cho hình thang cân ABCD có AB<CD,o là giao điểm của hai đường chéo,E là giao điểm của hai đường thẳng chứa cạnh bên AD và BC.Cm

a,OA=OB,OC=OD

b,EO là đường trung trực của hai đáy hình thang ABCD

Làm ơn giúp mik với pls :((

EX1 complete the second sentence so that it has similar meaning to the first sentence 

1.he drives more carefully than Jack does ->Jack_______ 

2.A horse doesn't plough as well as a buffalo ->A buffalo ___

3.the paddy field is so vast and green ->How ___

4.this is the first time Harry has ever ridden a camel->Harry has____

5.It was such a beautiful flower farm that lots of       tourists came to enjoy it ->the flower farm___

6.City people talk less hopefully about the future than people in rural areas->people in rural areas___

7.how lovely the house is!->what___

8.now Mary drives more carefully than she used to ->Mary used to___

9.Peter's brother doesn't study as hard as him->peter studies____

10.he can't join in our trip to Ha Noi ->he can't take___

11.Hoa doesn't sing as beautifully as her friends->Hoa's friend sing____

12.he spoke English better than his sister->his sister ___

13.they ran more quickly than us ->we run___

14.Ann speaks French more fluently than James->James speaks ____

15.I did the test worse than  Lan->Lan did______

16.Today the sun shines more brightly than yesterday->yesterday ____

17.Jim behaves more politely than his younger brother->Jim's younger brother ____

18.Teenagers are act more violently these days than in the past->Teenagers acted____

19.the doctor treats his patients less patiently than he should->The doctor should___

20.Nam works more lazily so he often gets worse marks than Quang ->Quang works____

21.This summer I go to the beach more often than the last summer->Last summer ____

22.Trung drivers more carefully than Minh so he has rarely had an accident->Minh drives____  

EX1 complete the second sentence so that it has similar meaning to the first sentence 1.he drives more carefully than Jack does ->Jack_______ 2.A horse doesn't plough as well as a buffalo ->A buffalo ___3.the paddy field is so vast and green ->How ___4.this is the first time Harry has ever ridden a camel->Harry has____5.It was such a beautiful flower farm that lots of       tourists came to enjoy it ->the flower farm___6.City people talk less hopefully about the future than people in rural areas->people in rural areas___7.how lovely the house is!->what___8.now Mary drives more carefully than she used to ->Mary used to___9.Peter's brother doesn't study as hard as him->peter studies____10.he can't join in our trip to Ha Noi ->he can't take___11.Hoa doesn't sing as beautifully as her friends->Hoa's friend sing____12.he spoke English better than his sister->his sister ___13.they ran more quickly than us ->we run___14.Ann speaks French more fluently than James->James speaks ____15.I did the test worse than  Lan->Lan did______16.Today the sun shines more brightly than yesterday->yesterday ____17.Jim behaves more politely than his younger brother->Jim's younger brother ____18.Teenagers are act more violently these days than in the past->Teenagers acted____19.the doctor treats his patients less patiently than he should->The doctor should___20.Nam works more lazily so he often gets worse marks than Quang ->Quang works____21.This summer I go to the beach more often than the last summer->Last summer ____22.Trung drivers more carefully than Minh so he has rarely had an accident->Minh drives____  

Fill in each blank with an appropriate preposition 1,During harvest time,people harvest rice ___using a combine harvester 2,the farmers loaded the rice ___the truck 3,she doesn't usually take part ____ any of the class activities 4,the farmer separate grain seeds ___the bundles of stalks 5,he joined the boys ____herding the buffaloes 6,Son Doong is famous___the largest cave in the world 7,would you like to visit the countryside ____harvest time ?