Which lines are used for measuring latitude and longitude on Earth?

Which lines are used for measuring latitude and longitude on Earth?

• A. Arctic Circle and Antarctic Circle
• B. Tropic of Cancer and Tropic of Capricorn
• C. Equator and Prime Meridian
• D. International Date Line and Equator

Answer: (C)

Latitude and longitude form a grid that uses two main reference lines. The Equator is the zero line for latitude, so distances north or south are measured from it in degrees up to 90°. The Prime Meridian is the zero line for longitude, so distances east or west are measured from it in degrees up to 180°. Other lines, like the Arctic Circle or Tropics, are specific latitudes but aren’t the starting points for measuring latitude and longitude. The International Date Line serves a date-change role and runs near 180° longitude, but longitude is measured from the Prime Meridian, not from the Date Line. So the lines used for measuring latitude and longitude are the Equator and the Prime Meridian.

Latitude and longitude form a grid that uses two main reference lines. The Equator is the zero line for latitude, so distances north or south are measured from it in degrees up to 90°. The Prime Meridian is the zero line for longitude, so distances east or west are measured from it in degrees up to 180°. Other lines, like the Arctic Circle or Tropics, are specific latitudes but aren’t the starting points for measuring latitude and longitude. The International Date Line serves a date-change role and runs near 180° longitude, but longitude is measured from the Prime Meridian, not from the Date Line. So the lines used for measuring latitude and longitude are the Equator and the Prime Meridian.