冰狐菲
幼苗
共回答了21个问题采纳率:100% 举报
过点M作MK ∥ BC,交AF,AE分别于K,N,
∵M是AC的中点,
∴
MN
EC =
NK
EF =
AN
AE =
AM
AC =
1
2 ,
∵E、F是BC的三等分点,
∴BE=EF=FC,
∴MN=2NK,
∵
MH
BH =
MK
BF =
1
4 ,
MG
BG =
MN
BE =1,
∴MH=
1
4 BH,MG=BG,
设MH=a,BH=4a,BG=GM=
5a
2 ,
∴GH=GM-MN=
3a
2 ,
∴BG:GH:HM=
5a
2 :
3a
2 :a=5:3:2.
故答案为:5:3:2.
1年前
2