Longitude is measured east or west of what reference?

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Multiple Choice

Longitude is measured east or west of what reference?

Explanation:
Longitude is defined as the angular distance east or west from the Prime Meridian, the reference line that runs from the North to the South Pole and passes through Greenwich. This zero line sets the starting point for measuring longitude, with values increasing toward the east up to 180° and toward the west up to 180°. The Equator relates to latitude, not longitude. The International Date Line sits near 180° longitude and is used to adjust calendar dates, but it isn’t the reference for measuring longitude. The Tropic of Capricorn is a latitude line located at about 23.5°S. So the reference for measuring longitude is the Prime Meridian.

Longitude is defined as the angular distance east or west from the Prime Meridian, the reference line that runs from the North to the South Pole and passes through Greenwich. This zero line sets the starting point for measuring longitude, with values increasing toward the east up to 180° and toward the west up to 180°. The Equator relates to latitude, not longitude. The International Date Line sits near 180° longitude and is used to adjust calendar dates, but it isn’t the reference for measuring longitude. The Tropic of Capricorn is a latitude line located at about 23.5°S. So the reference for measuring longitude is the Prime Meridian.

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