Nothing? The station on the Washington Metro does not have a any word before the relevant shape.
Correct!The
PointActon Main
LineWinnersh
TriangleSt Leonards Warrior
SquarePentagonOne, Two, Three, Four and Five vertex shapes at the end of Station names.
"The Pentagon" is the name of the USA government building (rather than the station) which was why that was so close, and I would have been tempted to accept City as in "Pentagon City" although that is not the
end of the name.