M
mamcay
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
cho 3 giac ABC noi tiep (o).cac duong cao BE va CF cat nhau o H va cat (o)o T va
a, cm 4 giac BCEF noi tiep
b, cm TS //EF
c,Ke OI vuong goc voi BC ,duong thang vuong goc voi HI o H cat AB,AC o M ,N
cm 3 giac IMN can
giup minh cau c thoi nhe,thanhs
a, cm 4 giac BCEF noi tiep
b, cm TS //EF
c,Ke OI vuong goc voi BC ,duong thang vuong goc voi HI o H cat AB,AC o M ,N
cm 3 giac IMN can
giup minh cau c thoi nhe,thanhs