truc nang ton

chao cac ban!! mjnh co mot that mat ma ko  co ai giai thich mong cac ban tro giup mjnh voi!
- mjnh co 4 co cau cua may nang ton phang tuong ung voi 4 hinh cua file word
- hinh 1: 2 truc, hinh 2: 4 truc, hinh 3: 6 truc, hinh 4: 12 truc
- mjnh muon hoi la tai sao co cau cua hinh 4 phai bo tri den 12 truc

+ kha nang lam viec nhu the nao so voi 2 truc va 4 truc (be mat ton co phang hon khong).
+tai sao mjnh phai bo tri nhieu truc nhu vay (cong dung cua no de lam j).
+tuoi tho cua 12 truc so voi 2 truc va 4 truc