Wikipedia contributors. (2023, August 21). Polygon. In Wikipedia, The Free Encyclopedia. Retrieved October 31, 2023, from https://en.wikipedia.org/w/index.php?title=Polygon&oldid=1171522287
Indeed, if the term matter is taken to mean solid substance as opposed to energy which is understood to mean a force of some sort, then the use of the former is entirely misleading.
Polygon (Wikipedia) In geometry, a polygon (/ˈpɒlɪɡɒn/) is a plane figure made up of line segments connected to form a closed polygonal chain.