C
casio0593


cho tam giac abc (ab=ac). gọi M la 1 diem nam tren cun bac cua duong tron ngoai tiep tam giac abc. tren tia bm lay mk=mc. tren tia ba lay ad=ab
a) chung mjnh góc bkc=1/2 góc bac
b)chung mjnh tu giac bckd noi tiep duoc duong tron
cau a mjnh lam roi chj can giup cau b thoi nha. thank
a) chung mjnh góc bkc=1/2 góc bac
b)chung mjnh tu giac bckd noi tiep duoc duong tron
cau a mjnh lam roi chj can giup cau b thoi nha. thank