The proportion listed for Brazil’s national flag is 7:10. This describes the flag’s width-to-length relationship in the convention used by the flag’s standard reference listing.
Brazil’s official construction rules express the same geometry in modules: the flag is 14 modules wide and 20 modules long. Reduced to a ratio, that is 7:10 when width is stated first. The yellow diamond, blue globe, white band, and stars are all positioned using related modular measurements.
A common source of confusion is that some descriptions state the dimensions as length before width, producing 10:7 instead. Those figures describe the same rectangular shape from the opposite order. The quiz’s 7:10 answer matches the listed proportion and is not a different flag design.