cho 2 diem M va N nam Cung phia voi A , nam cung phia doi voi B . Diem M  nam giua A va B . biet AB =3cm,BN=1cm.chung to rang:

a, bon diem ABMN thang hang  

b, diem N la trung diem cua doan MB 

c , ve dung tron tam N di qua B va duong tron tam A di qua N , chung cat nhau tai C tinh chu vi tam giac CAN

cho hai diem M va N nam cung phia  doi voi A,nam cung phia  doi voi B. diem M nam giua Ava B biet Ab =5 cm AM =3cm BN=1cm .CMR BON DIEM A ,B , M,M nam thang hang va diem N la trung diem cua doan thang MB

cho cac diem A va B thuoc duong thang a .diem C nam giua A va B .diem D nam giua  C va B

a)tim tren duong thang a nam cung phia doi voi diem  C diem nam khac phia doi voi diem C

b) tim tren hinh ve cac tia doi nhau goc C ,cac tia trung nhau goc C 

c) vi sao diem C nam giua A va D 

Ve tren cung mot hinh theo cach dien dat sau :

a)Ve 4 diem A ,B ,C D sao cho C nam giua A, B va 3 diem A, B D ko thang hang . Hay ve va ke ten duong thang (phan biet) di qua tung cap diem .

b) Ve diem E sao cho E va D nam khac phia doi voi A . Ve diem F sao cho C,E,F thang hang va F thuoc duong thang DB

ve(A;3cm) ve M thuoc (A;3cm) ve N khong thuoc (A;3cm) so sanh AN va AM

bai 2:ve(O;3cm) ve OA=5cm cat duong tron tam o tai B ve (B;2cm)

a)cho biet vi tri diem O,diem A doi voi (B;2cm)

b)duong tron(B;2cm) catOB tai M. chung to M la trung diem cua OB

cho 3 diem A,B,C khong thang hang 

a)Ve duong thang AB, doan thang BC,tia AC.Lay dien M tren duong thang AB sao cho B,M nam cung phia so voi diem A

b)Ve tia Ax la tia doi cua tia AC.Lay diem N sao cho A la trung diem cua doan CN(ve tren cung 1 hinh)

cho 3 diem A,B,C khong thang hang.Ve 2 tia AB , AC

Ve duong thang a di qua 2 diem B va C

Ve 2 tia Ay cat duong thang BC tai diem N ( N khong nam giua B va C )

Ve tia doi cua tia Ay.Tren tia doi cua Ay lay diem M sao cho AM=3cm

Giai chi tiet rui mik like nha

ve 4 diem A,B,M,N sao cho diem A nam giua M va B , diem N nam giua A va B 

a ) hay cho biet diem A nam giua 2 diem nao .

b ) Tim cac diem nam cac phia doi voi A