The national boundaries
A national boundry is a thick black line
Central meridian is a line on a map. It begins with the letter c.
A train it's a red line
what geographic line is the country named after ? what does that line represent
A wavy blue line on a map usually indicates water. I could indicate a river, canal, or any type of waterway.
boarders
A national boundry is a thick black line
It is common for a map "key" or legend to gauge the size of cities on a map. For example, a city with a population of over 200,000 may be marked by a black dot surrounded by a black bordered circle line. White is the shade between the black dot and the black line of the circle.
Depending on the type of map you are referring to, the solid black line could indicate a national boundary. If it is a map of states, it could be a state boundary.
Contour lines on a map are typically brown or black in color. They indicate elevation changes on the map.
The Key, or Legend, or a map gives a list of the symbols used on the map and what they represent. There is a fairly standard set of symbols used for different types of map so that anyone looking at the map can understand what it is being shown. For example, on a weather map a cold front is shown as a black line with semi-circular bumps (in blue if coloured), a warm front is shown as a black line with triangles (in red if coloured) and an occluded front is shown as a black line with alternate semi-circular bumps and triangles.
Depending on the type of map you are referring to, the solid black line could indicate a national boundary. If it is a map of states, it could be a state boundary.
A blue line on a map is a lake ,river , or body of water
Water represents a blue line on a map.
The blue line on a map usually represents a stream of water!
To show a highway or road on a map, you will see it just shows a thinish or thickish line. That's what a highway,or road should look like on a map that you will look at and see.
Central meridian is a line on a map. It begins with the letter c.