Geographic coordinate systems use linear units of measure (e.g., meter or foot), not angular units of measure (e.g., degrees or radians).

• A. True
• B. Not Applicable
• C. All of the above
• D. False

Answer: (D)

Geographic coordinate systems specify positions with angular measurements rather than distances. Latitudes and longitudes are angles on the Earth's surface, usually expressed in degrees (and sometimes minutes/seconds). To work with distances or areas in linear units like meters or feet, you convert the data to a projected coordinate system, which maps the curved surface to a flat plane and provides linear units. So the statement is false: geographic coordinate systems use angular units, and linear units come from projected coordinate systems after a transformation. For example, a point at 40°N, 74°W is given in degrees, not meters; to obtain meters you’d project to a system like UTM.