Why does the biretta have 3 peaks?

The biretta, a traditional clerical hat worn by Roman Catholic clergy, typically features three peaks or points, which are thought to symbolize the Holy Trinity: the Father, the Son, and the Holy Spirit. This design also reflects the biretta's historical association with academic and ecclesiastical authority. The three peaks can also represent the three theological virtues: faith, hope, and charity. Overall, the biretta's structure carries deep religious and symbolic significance within the Catholic tradition.