the significant advantage of this system is its scaling: if a sheet with an aspect ratio of √2 is divided into two equal halves parallel to its shortest sides, then the halves will again have an aspect ratio of √2.
I believe North American sizes, when cut in half, instead take-on the aspect ratio of the next smaller size.
![image showing Paper sizes world map [OC]](5ca34c7c-737e-53d3-8560-4b5a0922f8ae.jpg)
EarlyEagle_7 on May 31st, 2019 at 12:03 UTC »
This explains why I cannot find any A4 papers in my country.
PerpendicularMelon on May 31st, 2019 at 12:52 UTC »
i always wondered wether the US used a different system, because in photoshop i always see international paper and US letter
Lust4Me on May 31st, 2019 at 12:58 UTC »
For those unfamiliar with A4:
the significant advantage of this system is its scaling: if a sheet with an aspect ratio of √2 is divided into two equal halves parallel to its shortest sides, then the halves will again have an aspect ratio of √2.
I believe North American sizes, when cut in half, instead take-on the aspect ratio of the next smaller size.