top left corner of the map
A map key is found on a map. It tells what certain symbols on the map mean. For example, the "star" on most maps means state/country capitals. It is in a small box.
The key on a map is what shows you what the psychical features or images on the map mean
The key is the map's legend. It indicates what the various map elements and symbols represent.
so the reader knows what the symbols and colors mean on a map.
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