What is the shape of the US Department of Defense headquarters in Arlington, Virginia?
Answer
A regular pentagon.
The massive headquarters building for the US Department of Defense, famously known as The Pentagon, is constructed in the precise shape of a regular pentagon. This means the building possesses five straight sides and five vertices, adhering strictly to the definition of a polygon. Despite the common linguistic confusion between the star shape (pentagram) and the five-sided shape (pentagon), the architectural design of this specific government landmark is based on the simpler, non-intersecting five-sided figure, not the complex, star-shaped pentagram.
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