Final answer:
The Georgian architectural style is characterized by its symmetry, classical proportions, and a pediment over the central entrance, distinguishing it from other styles like Queen Anne, Italianate, and Victorian, which have their own unique features.
Step-by-step explanation:
The style of architecture described as a rectangular, symmetrical structure featuring a central entrance with a pediment or decorative crown is Georgian architecture. This style is known for its classical proportions and symmetry, influenced by the architectural styles of ancient Rome and Greece. Notable examples of Georgian architecture include buildings from the 18th century, which often incorporate the use of columns, pilasters (a shallow rectangular column that is attached to a wall), and a pediment above the entrance. The Georgian style represents a period in English architecture that followed the Baroque period, where Baroque architecture is characterized by dramatic, elaborate, and heavy structures, yet in England, it embraced a more restrained classical style.