Longitude lines direction and measurement are described as which?

• A. East-west, measure north/south
• B. North-south, measure east/west
• C. Circular around the earth
• D. Vertical lines toward the poles

Answer: (B)

Longitudes run from pole to pole, so their direction is north-south. They’re used to measure how far east or west you are from the Prime Meridian (0° longitude). This matches the idea of longitude lines describing east-west position while extending vertically from the poles. For contrast, latitude lines run east-west and tell you how far north or south you are, which is a different measurement. So describing longitude as north-south in direction and east-west in measurement is the correct way to understand how these lines work.