Midfield Trojan Paul Onobi was an early substitute as he sustained a knock in the 35thminute and was replaced by U-23 ace Usman Mohammed.
Angola later missed a penalty just before half time.
The Negras, silver medalists at the 2 ndAfrican Nations Championship in Sudan five years ago, tried to pile pressure on the Eagles in the second half, but five substitutions made by CoachSundayOliseh kept the 2014 bronze medalists in the ascendancy.
Nigeria took the lead in the 84 thminute when Ibrahim Attah Salau was upended in the Angolan box, with midfielder Bartholomew Ibenegbu making no mistake from the spot.
Angola equalized from a corner kick with only two minutes left in the game.
The Super Eagles have another top-notch friendly – against Cote d’Ivoire – in Pretoriaon Monday. The Nigeria delegation is expected to arrive in Kigali onJanuary 15– three days to the Eagles’ first match of the 4thAfrican Nations Championship, against Niger Republic.