latitude and longitude
If it is on a map for ocean travel it would mean degrees
no they cannot paralles show distance from the equatorin degrees
Zero degrees
You look at the colors and if a color is on the map and on the scale/key, it is the same then they mean the same thing for example if blue means 50 and green means 65 and the whole map is blue the whole area is 50 degrees
South America
The latitude lines printed on a map will depend on the scale of the map. A map of the Earth will probably have latitude lines printed every 15 or 30 degrees; a map of the United States will have latitude lines printed every 5 or 10 degrees.
Antarctica
Columbus, OH
A guide to what the symbols on the map mean
Latidude, given in degrees, is a measurement or distance north or south of the equator, and it is most commonly used to tell you where you are located on a globe or map.
Balmertown, Ontario, Canada.
Europe