hik hik ai co long tu bi thi giup minh voi?

Bai 1: Cho tam giac ABC co: goc A = 90 do. AB phan AC= 5 phan 12. Tinh AB, AC

Bai 2: Cho tam giac ABC co: D thuoc BC: BD= 1phan 2 DC. E thuoc tia doi MB: ME=MB. F thuoc tia doi MC: MF=MC

a) C/m: AE=AF

b) C/m: Diem A nam giua E va F

Cac ban oi lam on giup minh voi duoc khong, nan ni ay, mai minh thi hoc ky roi. Giup duoc bai nao cung duoc ma, . Neu duoc tkaks nhieu nha. ( giai theo chuong trinh lop 7). Giai chi tiet va ro rang tung phan cho minh nha

Update:

giup minh di ma chang le khong con ai giai duoc bai nay nua sao. Hu hu giupem voi phan nao cung duoc

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