Your thinking of the Prime Meridian, which terminates at the poles, and which connects to the International Date Line -- a non-straight line for political reasons, that essentially mirrors the PM, pole to pole.
meridians
Latitude and longtitide are used to indicated the fixed location of a point or sphere in relation to two of that sphere's opposite poles and one line joining them. Here on Earth the two poles are the North Pole and the South Pole, and the line joining them is the one which runs through London, England. Latitide and longitude do not apply to a planet, as it orbits the Sun and is always moving.
A meridian describes an arc connecting the north and south poles (a single line of longitude). As such, a meridian will be 180 degrees.
A line of longitude may also be known as a meridian.Meridians (lines of Longitude) are great circles that go round the Earth through the North and South Poles. So they represent one-half of a polar circumference of the planet.The Prime Meridian runs through England (Greenwich) and is 0 degrees longitude.
The Line of Demarcation split South America into sections for the countries which claimed it. The Line of Demarcation was drawn by Pope Alexander in 1493.
The imaginary line that runs through Earth's North and South poles is called the axis or polar axis.
The axis
meridians
The imaginary line passing through the center of the Earth between the North and South Poles, around which the Earth rotates, is called the Earth's axis.
axis - An imaginary line that passes through earths center and its north and south poles.
Every line of longitude passes through both the North and South Poles, which are located on the continent of Antarctica.
A line running north and south/ up and down is called a vertical line.
A geodesic line connecting the north and south poles.
equator
The straight line between the poles is the Earth's axis of rotation. The curved lines between the poles and along the surface are the meridians of longitude.
Yes, every line of longitude runs from the North Pole to the South Pole.
The axis of the earth is an imaginary line running through North and South Poles. It is tilted at an angle of 23 degrees.