Trên cung mot hinh ve
a,3 Điện khong thang hang A,B,C
b,Ve doan thang AB , duong thang BC
c, Tia AC va tia Ay la tia doi cua tia AC
d,Ve tia Cx cat doan thang AB tai trung diem M cua AB
cho 3 diem A,B,C, khong thang hang,ve doan thang BC
ve diem M la trung diem cua doan thang BC
ve tia BA,duong thang AC
ve duong thang AD sao cho M nam giua A va D
cho cac duong thang a,b,c .Biet a cat b tai diem A, b cat c tai diem C , a cat c tai diem B
a / chi ra cac doan thang co tren hinh ve
b/ ve tia AD a tia doi cua tia AC ,ve tia BE la tia doi cua tia BC
c/ lay diem M thuoc tia AC .ve tia AM
ve hinh cho to nha
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)
bai 1;cho 2 tia Ox vaOy khong doi nhau
a,ve duong thang aa' cat tia Ox va Oy lan luot tai A va B khac O.Ve diem M nam giua A va B.Ve tia OM.Ve tia ON la tia doi cua tia OM
b,chi ra nhung doan thang tren hinh
c,chi ra 3 diem thang hang tren hinh
bai 2;ve tia Ox.Ve tren tia Ox voi OA la 3cm;OB la 5cm;OC la 7cm
CMR diem B la trung diem doan thang AC
-cho ba diem A,B,C khong thang hang
-ve hai tia AB , AC
-ve tia At la tia doi cua tia AC
-LAY diem I la trung diem cua doan thang BC
lay ba diem A,B,C ko thang hang . ve 2 tia AB va AC sau do ve tia Ax cat doan thang BC tai diem K giua hai diem B vaC
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
lay 3 diem ko thang hang A,B,C ve 2 tia AB va AC ve tia Ax cat doan thang BC tai diem K nam giua 2 diem B va C