By international agreement about 200 years ago, the zero-reference
line of longitude is the Prime Meridian.
All lines of longitude are equally long, beginning and ending at the poles.
Every meridian of longitude begins and ends at the earth's poles.You can consider whichever one you prefer to be the beginning.
You're thinking of the International Date Line -- ~180 degrees of longitude -- which is not a straight line, because of politics.
Not sure how to answer this one because it may mean 'who first thought of longitude' or it may mean 'where does a longitude line start'. Come back when you've explained what you mean.
All of the longitude "lines" merge at the north and south poles, so you might say that they 'start' at one of these points and end at the other one. If the question means to ask: "Where is the line of zero longitude ?", then the answer is: The origin of longitude is defined as the Prime Meridian, an imaginary line between the north and south poles that passes through the Royal Observatory in Greenwich, England.
The Prime Meridian is a line of longitude, and it sits at 0 degrees longitude.
The major line of longitude located at 180 degrees longitude is the International Date Line.
No, its the longitude line. Its 0 degress longitude.
another name for a line of longitude is meridian.
104W is a longitude line. Anything labelled as "E" or "W" is longitude.
The name of the line that has 0 longitude is the prime meridian
A line of constant longitude is often referred to as a 'meridian'.