In geometry, a polygon (/ˈpɒlɪɡɒn/) is a plane figure made up of line segments connected to form a closed polygonal chain.
The three aerial FM radio and television towers are just north along I-694 in Shoreview, the suburb just north of Arden Hills and Roseville on the St. Paul side of the Twin Cities. Telefarm Towers are the pair to the west, and KMSP Tower is to the east.
Polygons appear in rock formations, most commonly as the flat facets of crystals, where the angles between the sides depend on the type of mineral from which the crystal is made.