`CD` and `GH` are the bisectors of `/_ACB` and `/_EGF` respectively. If `D` lies on `AB` of `DeltaABC` and `H` lies on `EF` of `DeltaEFG` and if `DeltaABC~DeltaEFG`, then prove that `(a)` `(CD)/(GH)=(AC)/(FG)`, `(b) DeltaDCB~DeltaHGE`, `(c ) DeltaDCA~DeltaHGF`