A fence is to be constructed in a zigzag pattern inside a rectangular field, as shown.
The fence will be constructed so that \(\angle AHD=\angle EHG\), \(\angle AEH=\angle BEG\), \(\angle EGH=\angle FGC\), and \(CF=12\) m. If \(AB=36\) m and \(AD=20\) m, determine the total length of fencing required. That is, determine the value of \(AH + EH + EG + FG.\)