The LineBuilder transformer cannot create polygons. Only the AreaBuilder transformer can create polygons.

• A. TRUE
• B. FALSE
• C. Sometimes
• D. Always

Answer: (B)

LineBuilder is designed to build linear features from a sequence of points, but it isn’t restricted to producing only lines. If you provide a closed sequence of points that forms a ring, the geometry can be interpreted as a polygon in your workflow, or you can polygonize the closed ring downstream to get a polygon feature. AreaBuilder is specialized for creating polygons directly, but that doesn’t mean a LineBuilder can never yield polygons in all situations. In practice, you often use AreaBuilder for polygons, or you close a line and then convert it to a polygon later, which is why the statement isn’t strictly true.