Co' vaj` baj` toan' thay' hay mo` cung~ don gian? post len cho moi nguoi` lay' lam` tu lieu ( kha? nang cho dang nay` kha' cao , moi `nguoi` co' giai? nhe!!!!!!!!)
Cho d`/tr` tam O , duong` kinh' AB & d`/tr` tam O' t'/x nhau taj A, cat' Ab taj C. Ve~ day cung EF cua? (O) vuong goc' vs BC taj trung diem? H cua? BC.
1.ECFB la` hinh` j`?????
2.AE cat' (O') taj K . CMR: K,C,F thang? hang`
3.CMR: HK la` tip' tuyen' cua? (O')
4. M la` giao diem? cua? AF va` (O'). CMR: AB,FK,Em dong` wy
5. CMR: C la` tam cua? d`/tr` noi tip' tam giac' MHK
Co' giai? cho hoan` chinh? nhe!!!!!!!!!!