Intermediate Geographic Information Systems (GIS) 1 Practice Exam

In Geographic Information Systems (GIS), objects represented as two-dimensional are primarily understood in terms of their geometric properties and how they occupy space. Polygons are a fundamental type of geometry that consists of multiple points defining a closed shape in a 2D plane. They are used to represent areas such as countries, lakes, and land parcels on a map.

The representation of polygons takes into account both the length of their boundaries and the area they cover, allowing for a comprehensive spatial analysis of the features they depict. Each vertex of a polygon contributes to the overall shape, providing detailed information about the feature's boundaries.

While lines and points are also types of geometric objects represented in GIS, they do not fulfill the criterion of being two-dimensional in the same manner as polygons. Lines represent linear features but do not enclose an area, and points serve as singular locations without extent. Therefore, polygons distinctly fit the description of being twodimensional objects in GIS, embodying both width and height in spatial analyses.