i) In Triangle ADF
GF//DF(Mid Point Theorem)
GF=DF
H.PROVED
ii) In Triangle ADC
AE:EC=1:1 -1
EF:FC=1:1 -2
From 1 and 2 we can say that AE:EC:FC=1:1:1:1
So AF:AC IS 3:4
I am a little weak in maths so some part may be incorrect you can check some help from another answers
Hope it Helps
I tried my Best
