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Ha ve a Happy Tho ught:     Flags are a great way to show affiliation – with a team, or a social group, or, most often, a country. Flag design can be very in-depth, with vexillologists finding meaning in the smallest of details .     For example, t he shape of the flag is very important – and while there are only two recognized countries with a square flag , the rectangularness 1 of other national flags varies quite a bit! So for example, the flag of the United States of America has a 10:19 ratio, while the New Zealand flag is a 1:2 ratio.   1 Definitely not a word, but you still get what I mean     Image: Edward Mooney and Albert S Kirsch , 10 January 2000     However, the New Zealand Flag has a LOT more complexity on the inside, even using irrational numbers to define how the elements fit together.   Image: the standardised sizing and placement of various elements of the New Zealand flag.     Australia has kept their...