It would be accurate for Gabon and debatable (but not inaccurate) for Angola.

Basically, we think about these blocks:

- West Africa

- North Africa

- East Africa

- Southern Africa

- Central Africa

Now some countries are "on the border" and the description depends more on cultural or economical ties than pure geography.

Angola could be southern or Central. Zambia could be eastern or central (or even southern) Uganda could be eastern or central.

It's complicated: https://en.wikipedia.org/wiki/African_Union#Role_of_Regional...

But Gabon is definitely Central Africa.