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 hinh theo cach dien dat sau
ve tia Ox va Oy doi nhau
lay A nam ngoai duong thang xy, v doan thang AO
lay diem B thuoc tia Ox ( B khac O ) ve tia AB
ve K la trung diem cua doan thang OA
Ve hinh theo cach dien dat sau: Tren duong thang a lay hai diem B va N. Ve ba diem A,M,C khong thang hang
ve hinh theo cach dien dat bang loi sau
a, ve duong thang MN
b, ve tia MN
c, diem C nam tren tia MN,co nhung kha nang nao xay ra?.Doi voi moi truong hop do hay chi ra diem
nam giua 2 diem con lai
Cho 10 diem phan biet,qua 2 diem ta ve mot duong thang
a)Co the ve duoc bao nhieu duong thang?neu cach lam
b)Neu co 5 diem cùng nam tren mot duong thang ngoai ra khong co 3 diem nao thang hang thi ve duoc it nhat bao nhieu duong thang?neu cach lam.
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 doan thang d . Ve them 4 diem M,N ,P,Q theo thu tu ay . Ve diem A khong nam tren duong thang d.
a) Ve tia AM, tia QA
b)Ve duong thang AN va duong thang AP.
c) hinh tren co bao nhieu doan thang?
vẽ hinh theo cach dien dat sau
cho 3 diem ABC khong thang hang ve duong thang a khong di qua hai diem ABC sao cho duong thang a cat nhau tai doan thang AB tai M BC tai n
Ve hinh theo cach dien dat sau:
a, diem M nam giua hai diem A va B: diem N khong nam giua hai diem A va B (ba diem N,A,B thang hang)
b, Diem B nam giua hai diem A va N; diem M nam giua hai diem A va B