Linked from
The 11 pages that link to Flag ratio, each with the reason it gives.
National flagRelated: A defined ratio helps specify the official shape of a national flag.
VexillologyRelated: Proportions distinguish designs and affect how flags appear when displayed.
Flag of MexicoRelated: Mexico’s flag has a 4:7 height-to-width ratio.
Flag of ChinaRelated: China’s national flag has a specified width-to-height ratio of three to two.
Flag of IndiaRelated: India’s flag has a prescribed width-to-height ratio of 3:2.
Flag of IndonesiaRelated: Indonesia specifies a width-to-height proportion of three to two.