Angola is 35% larger than Nigeria.
Area: 1,246,700 km2 World Factbook
Population: 19,088,106 (July 2014) World Factbook
Angola, officially the Republic of Angola, is a country in Southern Africa bordered by Namibia on the south, the Democratic Republic of the Congo on the north, and Zambia on the east; its west coast is on the Atlantic Ocean and Luanda is its capital city. Wikipedia
Area: 923,768 km2 World Factbook
Population: 177,155,754 (July 2014) World Factbook
Nigeria, officially the Federal Republic of Nigeria, is a federal constitutional republic comprising 36 states and its Federal Capital Territory, Abuja. Wikipedia