Các câu hỏi tương tự
Cho truoc mot so duong thang phan biet khong co 3 diem nao thang hang. So duong thang tao thanh tu cac diem do la 36, tinh so diem ?
So duong thang tao thanh từ 5 diem phan biet trong do khong co 3 diem nao thang hang la bao nhiêu?
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?
trong mat phang cho 10 diem phan biet, trong do khong co 3 diem nao thang hang.Hoi co the ve duoc bao nhieu tia, bao nhieu doan thang, bao nhieu duong thang? (neu trong diem phan biet do co 5 diem thang hang thi ve duoc bao nhieu tia, bao mhieu doan thang, bao nhieu duong thang).
so duong thang tao thanh tu 8 diem phan biet doi mot khong thang hang
so duong thang tao thanh tu 8 diem phan biet doi 1 khong thang hang lA
cho 5 diem phan biet va khong co 3 duong thang nao thang hang.Noi cac diem voi nhau de tao thanh duong thang.Co bao nhieu duong thang
so duong bthang tao thanh tu 8 diem phan biet doi mot khong thang hang la
cho n diem phan biet ( n thuoc Z , n>=2) . trong do khong co 3 diem nao thang hang. ke cac duong thang phan biet