Geographic coordinate systems use linear units (e.g., meters), not angular units.

• A. True
• B. Not Applicable
• C. False
• D. Both

Answer: (C)

Geographic coordinate systems use angular measurements. Locations are given by latitude and longitude in degrees (often decimal degrees), which are angles on the Earth's surface. To work with linear, metric units like meters, you must project the data into a projected coordinate system, which provides coordinates in meters (for example, UTM or a state-plane system). An example is WGS84 in degrees for latitude/longitude, which becomes meters when projected. So the statement is not correct because GCS inherently uses angular units, not linear units.