....technically a hexahectaenneacontakaiheptagon according to the linked article Because: Cartography? Surveying? Even though the borders of Colorado were supposed to be a geospherical rectangle, stretching from 37°N to 41°N latitude, and from 25°W to 32°W longitude, there's a fairly big difference between delimitation and demarcation. ...and they didn't have differential GPS in 1876..... Colorado Is Not a Rectangle—It Has 697 Sides - Atlas Obscura
