Concept:Longitude is the angular distance measured in degrees east or west of the Greenwich Meridian.
Explanation:The Greenwich Meridian is the reference line for locating places east and west on the Earth.
A point's angular distance from the centre of the Earth, measured in degrees, gives its position along this east-west direction.
When this angle is taken east or west of the Greenwich Meridian, it is called longitude.
Latitude, however, measures angular distance north or south of the Equator, not east or west of the Meridian.
Thus, the term that fits the given description is longitude.
Answer:D. longitude