Flags are produced in the different shapes.
The mostly extended and the mostly used geometric figure is rectangle in the side rations of 2:3, 1:2,3:5, in a few isolated cases are used the side rations of 4:5, 4:7, 5:8, 7:10, 7:11, 8:11, 11:8.
The shape of the square has standards, the Flag of Vatican and the red flag of Switzerland with the white cross.
The triangle and polygon are the geometric shapes, which remained from the past. For the support of the selling of these products, services and decoration are used new shapes of the flags today.