Final answer:
Roman buildings are characterized by the use of arches, vaults, and domes and not steel rods. Greek buildings use columns, pediments, and friezes. Round arches, barrel vaults, and cross barrel vaults are common features in Roman buildings.
Step-by-step explanation:
Roman buildings are characterized by the use of arches, vaults, and domes. The Romans effectively combined concrete and the structural shape of the arch, which allowed them to build taller and with more floors compared to Greek buildings. The use of steel rods was not a feature of Roman buildings. Instead, the Romans relied on the strength and durability of arches, vaults, and domes.
Columns, pediments, and friezes were used in Greek buildings, not Roman buildings. The Romans also invented concrete, which further enhanced the structural integrity of their arches, vaults, and domes.
The presence of round arches, barrel vaults, and cross barrel vaults are features commonly found in Roman buildings. Additionally, Roman buildings like the Colosseum and aqueducts utilized arches in their construction.