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2. Google Maps - Wikipedia

   en.wikipedia.org/wiki/Google_Maps

   Google Maps offers satellite imagery, street maps, 360° views, traffic conditions, and route planning for various modes of transportation. It was launched in 2005 by Google, after acquiring several companies that developed the technology and data behind it.

3. Geographical distance - Wikipedia

   en.wikipedia.org/wiki/Geographical_distance

   Learn how to calculate the distance between two points on the Earth's surface using different approximations and formulae. Compare flat, spherical and ellipsoidal models and their errors and limitations.

4. Scale (map) - Wikipedia

   en.wikipedia.org/wiki/Scale_(map)

   Learn how to measure the scale of a map, which is the ratio of a distance on the map to the corresponding distance on the ground. Find out the difference between nominal scale, scale factor, and large-scale, medium-scale, and small-scale maps.

5. Linear scale - Wikipedia

   en.wikipedia.org/wiki/Linear_scale

   A linear scale, also called a bar scale, scale bar, graphic scale, or graphical scale, is a means of visually showing the scale of a map, nautical chart, engineering drawing, or architectural drawing. Learn how linear scales are used, named, and vary with latitude and projection.

6. Bearing (navigation) - Wikipedia

   en.wikipedia.org/wiki/Bearing_(navigation)

   Bearing or azimuth is the horizontal angle between the direction of an object and north or another object. Learn about absolute, relative, grid, compass and azimuth bearings, and how they are measured and used in navigation.

7. Triangulation - Wikipedia

   en.wikipedia.org/wiki/Triangulation

   Triangulation is the process of determining the location of a point by forming triangles to the point from known points. It is used in surveying, navigation, computer vision and other fields, and has a long history dating back to ancient Egypt and Greece.

8. Google Maps Navigation - Wikipedia

   en.wikipedia.org/wiki/Google_Maps_Navigation

   Google Maps Navigation is a discontinued mobile app that provided turn-by-turn voice-guided directions using GPS and Internet connection. Learn about its history, features, availability and comparison with other satellite navigation software.

9. Great-circle distance - Wikipedia

   en.wikipedia.org/wiki/Great-circle_distance

   The haversine formula is a computationally efficient way to calculate the great-circle distance between two points on a sphere, using the chord length of unit sphere. It is accurate for short distances and avoids the rounding errors of the spherical law of cosines formula.