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!
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?
1. Tren 1 duong thang xy lay 4 diem phan biet A,B,C,D hay chi ra cac tia doi nhau
2. cho 10 diem trong do khong co ba diem thang hang . Cu qua hai diem ta ve duoc 1 duong thang . Hoi co tat ca bao nhieu duong thang?
3. cho n diem trong do khong co ba diem nao thang hang . Cu qua hai diem trong so cac diem do ve duoc 1 duong thang. Biet rang co 435 duong thang tao thanh .Tim n?
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 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
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 truoc 5 diem A, B, C, D, E trong do khong co 3 diem nao thang hang. Ve cac duong thang di qua cac cap diem. Hoi ve duoc bao nhieu duong thang, la nhung duong thang nao?
- 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 6 diem phan biet , trong do ko co 3 diem nao thang hang. Ve dc bao nhieu duong thang di qua cac cap diem?