The intersection of latitude and longitude defines a precise location on the planet that is unique from every other location. There may be a thousand "123 Fake Street" addresses around the world, but there is only one place with your latitude and longitude. When you are setting up a telescope or satellite dish, you often need to use such a precise location. You might also use the specific latitude and longitude if you're using a GPS module or participating in the GPS-based hobby of geocaching.
Open Maps.Google.com, and type in your address. Click "Search Maps." Zoom in on the map to see your exact location.
Right-click at your address, and choose "What's Here?" Do not click on the red marker for your address, but click very close to it.
Look at the search bar to see the coordinates for that location. The numbers will have six decimal places each. If you are in the Western Hemisphere, the second number will be negative. If you live in the Southern Hemisphere, the first number will be negative. For example, the coordinates for the Statue of Liberty in New York are "40.689238,-74.044558" The first number is degrees north of the Equator; the second number is degrees east of the Prime Meridian.
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