Triangle is a three-sided polygon that has been used in various fields due to its unique shape. However, there are other terms that resemble a triangle. One synonym for a triangle is a "trigon." The word trigon is derived from the Greek word "trigonon," meaning "three angles." Another synonym for a triangle is a "trianon." Trianon is used mainly in architecture and refers to a small ornamental tower with three sides. The term "trifolium" is also considered a synonym for a triangle, referring to a three-leaflet clover or shamrock. In summary, triangle has many synonyms, and each term describes a triangular shape in its unique way.