Cho 20 diem, trong do khong co ba diem nao thang hang. Hoi ta ve duoc bao nhieu duong thang di qua cac cap diem do.

Tra loi gap dum mik nha, nhanh nhanh nha. Thank you very much!^_^

Cho truoc n diem trong do ko co 3 diem nao thang hang.Ve cac duong thang di qua cac cap diem,Tim n biet rang neu co them 1 diem(ko thang hang voi bat ki 2 diem nao trong so n diem da cho) thi so duong thang ve duoc tang them la 8.

Minh dang can gap!Cac ban giup minh voi nhe!

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 20 diem phan biet , trong do co dung 7 diem thang hang , ngoai ra khong co 3 diem nao thang hang.cu qua 2 diem ta ve duoc 1 duong thang.hoi tu 20 diem do ta ve duoc bao nhieu duong thang

Cho 20 diem trong do khong co 3 diem nao cung nam tren 1 duong thang hoi co the ve duoc bao nhieu hinh tam giac 3 trong 20 diem da cho lam dinh

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?

cho truoc n diem trong do k co 3 diem nao thang hang ve duong thang di qua cac cap diem. Tim n biet rang neu co them 1 diem (k thang hang voi bat cu 2 diem nao trong tong so n diem da cho) thi so duong thang ve dc tang them 8 duong 

Cho 5 diem trong do khong co 3 diem nao thang hang

Ve cac duong thang di qua 2 diem

Hoi co bao nhieu duong thang

Cho 20 diem trong do cu qua 2 diem ta ke 1 duong thang 

a/Neu khong co 3 diem nao thang hang thi ta ke duoc bao nhieu duong thang

b/neu co dung 5 diem thang hang thi ke duoc bao nhieu duong thang