Which term defines how far east or west a point is on the globe relative to the prime meridian?

• A. Longitude (Vertical)
• B. Latitude (Horizontal)
• C. Equator
• D. Conic Projection (Cone)

Answer: (A)

Longitude tells you how far east or west a place sits from the Prime Meridian. It uses meridians, which are vertical lines that run from the North Pole to the South Pole, with the Prime Meridian at 0° passing through Greenwich. Longitude is measured in degrees east or west up to 180°, and it works together with latitude (which measures north–south position relative to the equator) to pinpoint a location on the globe. The equator is a specific latitude line at 0°, not an east–west measure, and conic projection is a map projection method, not a coordinate for a location.