The Ohio Burgee is the official flag of the U.S. state of Ohio....wikipedia - 31 Jan 2017
The Ohio Burgee is the official flag of the U.S. state of Ohio. Ohio's swallowtail flag is the only non-rectangular U.S. state flag. Its red, white, and blue elements symbolize the state's natural features and order of admission into the Union. A prominent disc in the flag's triangular canton is suggestive of the state's name.