Which geometry type would best represent the footprint of a city boundary?

• A. Points
• B. Lines
• C. Polygons
• D. Surfaces

Answer: (C)

Representing a city footprint requires capturing the area inside the boundary. A polygon is defined as a closed ring of vertices that encloses space, making it the natural geometry for 2D areas like city boundaries. Points only mark locations with no area. Lines form boundaries but do not enclose an area. Surfaces are used in some contexts for continuous spaces or 3D representations; for a flat, planar footprint, the polygon is the correct vector geometry type.