- Kettering is a city in Montgomery County, Ohio and Greene County, Ohio, United States. It is an inner suburb of Dayton. As of the 2020 census, the city had a population of 57,862, making it the largest suburb in the Dayton metropolitan area.
- Polygon (Wikipedia)
In geometry, a polygon (/ˈpɒlɪɡɒn/) is a plane figure made up of line segments connected to form a closed polygonal chain.