If we have five identical rigid rods, each of length l and mass m, are connected together to form the system shown in the figure. The system may rotate about an axis passing through AB. The question is to find the moment of inertia of the system with respect to axis AB. I managed to find the MOI of BC and DE using parallel axis theorem. My question is more about CD and FE. How to find the MOI wrt CD and FE?