Dome.
Pitched brick barrel vault.
Barrel vault.
Groin vaults.
Rib vault.
Fan Vault.
Hyperbolic paraboloids.
Answer:
a waterpout I think I may be wrong
Answer:
The carvings found spiraling the column depict the events of the Dacian Wars, which are incredibly accurate according to scholars. The carving and the gilded statue of the emperor on top serve to document the past, as a history book does, and also to commemorate a great time in Roman History.
A should be the answer I am not sure
