Răspunsuri

2014-04-28T19:53:03+03:00
Notam BE bisectoarea si BF inaltimea
In BEC daca BE bisectoare EBC=50,C=30⇒CEB=100
BEF=180-100=80
In BEF ,BFE=90,FEB=90 deci FBE=180-80-90=10