Where in the world?
The flag of Sudan is composed of three equal horizontal bands of red, white and black, with a green isosceles triangle superimposed on the hoist side. The green triangle spans about two-fifth the width of the field with its base on the hoist end.

Sudan

Native Name:
السودان, Sudan
Population:
51,662,000
Region:
Africa
Sub Region:
Northern Africa
Capital:
Khartoum
Top Level Domain:
.sd
Currencies:
Sudanese pound