Answer:
The English prefix tri-, derived from both Greek and Latin, means “three.” Some common English vocabulary words that contain this prefix include triathlon, trio, and triangle. The word originates from the Greek word trilogia, meaning "series of three related tragedies performed at Athens at the festival of Dionysus." Today, you can use trilogy to describe three of anything, such as a trilogy of movies that has the same characters, settings, and themes.
