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  2. GeoGuessr - Wikipedia

    en.wikipedia.org/wiki/GeoGuessr

    The "classic" GeoGuessr game mode consists of five rounds, each displaying a different street view location for the player to guess on a map. The player then receives a score of up to 5,000 points depending on how accurate their guess was, up to 25,000 points for a perfect game.

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  4. Contour line - Wikipedia

    en.wikipedia.org/wiki/Contour_line

    A contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes. [4] The contour interval of a contour map is the difference in elevation between successive contour lines. [5] The gradient of the function is always perpendicular to the contour ...

  5. Topographic map - Wikipedia

    en.wikipedia.org/wiki/Topographic_map

    Topographic maps are also commonly called contour maps or topo maps. In the United States, where the primary national series is organized by a strict 7.5-minute grid, they are often called or quads or quadrangles. Topographic maps conventionally show topography, or land contours, by means of contour lines.

  6. Topographic profile - Wikipedia

    en.wikipedia.org/wiki/Topographic_profile

    A topographic profile or topographic cut or elevation profile is a representation of the relief of the terrain that is obtained by cutting transversely the lines of a topographic map. Each contour line can be defined as a closed line joining relief points at equal height above sea level. [1]

  7. Marching squares - Wikipedia

    en.wikipedia.org/wiki/Marching_squares

    Typical applications include the contour lines on topographic maps or the generation of isobars for weather maps. Marching squares takes a similar approach to the 3D marching cubes algorithm: Process each cell in the grid independently. Calculate a cell index using comparisons of the contour level(s) with the data values at the cell corners.