Triskelion refers to an object composed of three legs. It is also the name of a symbol in Sicily. In the 8th century BC, an ancient Greek expedition in search of new land discovered a vast and unknown island. They are attracted by the rich natural resources of the island. While sailing around the island, the expedition found that the island had three endpoints, CAPU pachinu to the south, CAPU peloru to the East, and CAPU lilibeu to the north. They called the island Trina CRIA, meaning a triangle. Soon the tripod appeared on the island and was represented by the Greeks until now.
The symbol of the Isle of man is also a pattern of three legs, which is surprisingly similar to the picture of three curved legs. For many centuries, the discussion of the pattern has been encouraging. A more plausible explanation is that the design appeared before the birth of Indo European languages (earlier than ancient Greece, of course). Another way of saying is that because the Isle of man and Sicily were conquered by the Normans, there are similar patterns. In any case, only Sicily has been using this pattern as its symbol since before Christianization, and the conquest of the Roman Empire, Vandals, Arabs and Normans failed to break this tradition. The three legged picture has always been a symbol of Sicily, flying on flags and carved on palaces and other important public buildings.
Source: @dziarbara