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This cutaway view of the Earth shows the angular measurement of latitude and longitude.
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Image Courtesy of Dennis Ward/UCAR

# Angles Determine Latitude and Longitude

This cutaway view of the Earth shows the angular measurement of latitude and longitude.

Latitude, shown in blue, is the angular distance from the Equator to a point on the Earth's surface. Latitude can either be North or South, depending on the hemisphere in which the location is located. GPS units and digital mapping applications, such as Google Earth, often indicate northern latitudes as being positive (0 to +90 degrees), and give southern latitudes negative values (0 to -90 degrees).

Longitude, shown in red, is the angular distance from the Prime Meridian to a point on the Earth's surface. Longitude is described as being either East or West, depending on which way you measure from the Prime Meriadian, and ranges from 0 degrees at the Prime Meridian, to 180 degrees at the Antimeridian. Digital maps use positive numbers for eastern latitudes (0 to +180 degrees) and negative numbers for western latitudes (0 to -180 degrees).

Last modified July 23, 2008 by Becca Hatheway.

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## Latitude and Longitude

The most common way to locate points on the surface of the Earth is by standard, geographic coordinates called latitude and longitude. These coordinates are measured in degrees and represent angular distances...more

## Angles Determine Latitude and Longitude

This cutaway view of the Earth shows the angular measurement of latitude and longitude. Latitude, shown in blue, is the angular distance from the Equator to a point on the Earth's surface. Latitude can...more

## The Andes Mountains

The Andes Mountains form one of the longest mountain ranges on Earth, stretching over 7,000 km (4,400 miles) along the west coast of South America. The Andes are very narrow in most places and the average...more

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