Suppose that you need to travel by air from Miami (MIA) to Orlando (MCO) and you were restricted to flights represented on the graph. For the trip to Orlando, you decide to purchase tickets with a layover in Key West (EYW) as shown in Figure 12.86, but you still have to decide on the return trip. Determine if your roundtrip itinerary is a closed walk, a circuit, and/ or a directed cycle, based on the return trip described in each part.

1. You returned to Miami (MIA) by reversing your route.
2. Your direct flight back left Orlando (MCO) but was diverted to Fort Lauderdale (FLL)! From there you flew to Tampa (TPA) before returning to Miami (MIA).

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MCO EYW PBI FLL MIA Figure 12.86 MIA to EYW to MCO