There are two national flags for which this fits the description - the national flags of Lithuania, whose stripes are horizontal, and Guinea, whose stripes are vertical.
The flag of Algeria seems to be fairly close to your description. The related link shows the Algerian flag.
South Africa * * * * * No, the green in South African flag is not a pentagon. The country is Sudan.
The Olympic flag has a white background, with five interlaced rings in the center: blue, yellow, black, green and red. This design is symbolic and represents the five inhabited continents of the world, united by Olympic competition, while the six colors are those that appear on all the national flags of the world at the present time.
It depends on what size flag.
There is no national flag.
blue,red,black,green,yellow They represent 5 countrys
One third. The flag is three vertical bands of green, white and orange.One third. The flag is three vertical bands of green, white and orange.One third. The flag is three vertical bands of green, white and orange.One third. The flag is three vertical bands of green, white and orange.One third. The flag is three vertical bands of green, white and orange.One third. The flag is three vertical bands of green, white and orange.One third. The flag is three vertical bands of green, white and orange.One third. The flag is three vertical bands of green, white and orange.One third. The flag is three vertical bands of green, white and orange.One third. The flag is three vertical bands of green, white and orange.One third. The flag is three vertical bands of green, white and orange.
It is the flag of Ethiopia.
The country with a green flag and yellow diamond is Brazil. The flag features a green field with a yellow diamond in the center containing a blue circle with 27 white stars arranged in the pattern of the night sky over Rio de Janeiro on November 15, 1889.
Zambia.
the flag of Washington is a green flag with a yellow circle with George Washington in it.
The Brazilian flag is blue, green, and yellow with white stars.
cameroon
Lithuanian flag has yellow, green and red horizontal stripes.
Lithuania's flag's colours are "Yellow,Green,red"
the colors on the jamaican flag are actually green, black and gold
green yellow and blue