The number three is a natural number that follows two and precedes four. It is often represented by the numeral "3" and is the first odd prime number. In mathematics, three is significant in various concepts, such as geometry, where a triangle is the simplest polygon with three sides. In many cultures, the number three holds symbolic meaning. For example, in Christianity, it represents the Holy Trinity: the Father, the Son, and the Holy Spirit. Additionally, in mythology, three often appears in stories, such as the three Fates in Greek mythology, who control the thread of life.