1. Lay 4 diem A, B, C, D trong do khong co 3 diem nao thang hang. Ke cac duong thang di qua cac cap diem. Co bao nhieu duong thang tat ca? do la nhung duong thang nao? 

2. Lay 4diem M,N,P,Q trong do 3 diem M,N,P thang hang va diem Q nam ngoai duong thang do. ke caacacc duong thang di qua cac cap diem. co bao nhieu duong thang phan biet? viet ten cac duong thang do

mong cac ban giai ho minh!

lay bon diem A,B,C,D trong do co 3 diem khong thang hang.ke cac duong thang di qua cac cap diem.co tat ca bao nhieu duong thang ?do la nhung duong thang nao

lay 4 diem a b c d trong do khong co ba diem nao thang hang.ke cac duong thang di qua cac cap diem.Co tat ca bao nhieu duong thang ?do la nhung duong thang nao ?

lay muoi mot diem M,N,P,Q,A,D,F,G,R,T,S trong do khong co ba diem nao thang hang . Ke cac duong thang di qua cac cap diem . Co bao nhieu duong thang ( phan biet ) ? Viet ten cac duong thang do .

a) ve nam diem M,N,P,Q,R sao cho ba diem M,N,P thang hang,ba diem N,P,Q thang hang ,con ba diem N,P,R khong thang hang b) ke cac duong thang di qua cac cap diem.Co bao nhieu duong thang,ke ten cac duong thang do c)co bao nhieu doan thang?ke ten cac doan thang do d)ke ten cac tia goc P.Trong cac tia do chi ra hai tia doi nhau ? hai tia trung nhau?

- Ve va ke ten cac doan thang co hai dau mut trong so cac diem M,N,P,Q

- Ve cac duong thang,moi duong di qua hai trong so cac diem M,N,P,Q. Khi do ke ten cac duong thang phan biet

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cho 4 diem A B C D TRONG DO KO CO 3 DIEM NAO THANG HANG KE CAC DUONG THANG DI QUA CAC CAP DIEM CO BAO NHIEU DUONG THANG TAT CA HAY LIET KE RA

cho 6 diem phan biet , trong do ko co 3 diem nao thang hang. Ve dc bao nhieu duong thang di qua cac cap diem?

cho 6 diem phan biet, trong do ko co 3 diem nao thang hang. Ve dc bao nhieu duong thang di qua cac cap diem