Today we have a guide for you created by the Reddit user called Udzu that we found in the vexillology category that features a collection of some regular shapes on flags. Take a look at this excellent design to see 6 different flags from around the world with various shapes included in them.
And here we have some larger pictures of the flags with shapes in the piece as well as descriptions of the flags or if not the places they came from courtesy of Wikipedia with links to where you can get more information.
Flag of Brazil With Circle
The national flag of Brazil is a blue disc depicting a starry sky (which includes the Southern Cross) spanned by a curved band inscribed with the national motto Ordem e Progresso ('Order and Progress'), within a yellow rhombus on a green field. (More info)
Flag of Bahia With Triangle
The flag of Bahia is one of the official state symbols of the Brazilian state of Bahia. The flag contains four alternating horizontal stripes of equal length in white and red; in the upper hoist-side canton, a white equilateral triangle on a blue field. (More info)
Flag of Ilkhanate With Square
The Ilkhanate or Il-khanate was a Mongol khanate founded in the southwestern territories of the Mongol Empire. It was ruled by the Il-Khans or Ilkhanids and known to the Mongols as Hülegü Ulus. (More info)
Flag of Bali With Pentagon
Bali is an Indonesian island and province and the westernmost of the Lesser Sunda Islands. East of Java and west of Lombok, the province includes the island of Bali and a few smaller offshore islands. (More info)
Flag of Utah With Hexagon
The flag of the U.S. state of Utah is a horizontal tricolour of irregular blue, white, and red bands, with the white band featuring a gold-outlined blue hexagon containing a gold beehive above a five-pointed white star. (More info)
Flag of Lazio With Octagon
The flag of Lazio is one of the symbols of the region of Lazio, Italy. The flag is the coat of arms of Lazio surrounded by laurel and olive branches, surmounted by a golden crown on a sky-blue field with the words "Regione Lazio" in gold. (More info)