The 180th Meridian or 180° longitude is the exact opposite of the Prime Meridian.
The longitude of every point on Earth, from the Prime Meridian out to halfway around the world in the westerly direction is labeled "west longitude". The longitude of every point on Earth from the Prime Meridian out to halfway around the world in the easterly direction is labeled "east longitude".
Both of those longitudes are marked by the same meridian ... halfway around the globe from the Prime Meridian.
Halfway between the Prime Meridian and 80 degrees west has to be pretty close to 40 degrees west, we'd say.
180° is halfway around a circle or a sphere. Beginning at the Prime Meridian, you can travel EITHER east OR west, and after you have traveled 180 degrees, you'll arrive at the same line either way ... the meridian of 180° E and W longitude, which is halfway around the Earth in either direction from the Prime Meridian.
No. The Prime Meridian is. The International Dateline nominally (but not exactly) follows the 180° meridian ... exactly opposite and half a world away from the Prime Meridian.
The 180th Meridian is often referred to as the Antimeridian. It is exactly halfway aroung the globe for the Prime Meridian, which is 0 degrees, and occurs at Greenwich, England.
The longitude of every point on Earth, from the Prime Meridian out to halfway around the world in the westerly direction is labeled "west longitude". The longitude of every point on Earth from the Prime Meridian out to halfway around the world in the easterly direction is labeled "east longitude".
The geographic grid line 180 degrees of longitude from the Prime Meridian is the International Date Line. The day has to start somewhere. It is exactly 12 hours or halfway around the globe.
Both of those longitudes are marked by the same meridian ... halfway around the globe from the Prime Meridian.
Halfway between the Prime Meridian and 80 degrees west has to be pretty close to 40 degrees west, we'd say.
Nominally 180° of longitude, or halfway around the Earth.
180° is halfway around a circle or a sphere. Beginning at the Prime Meridian, you can travel EITHER east OR west, and after you have traveled 180 degrees, you'll arrive at the same line either way ... the meridian of 180° E and W longitude, which is halfway around the Earth in either direction from the Prime Meridian.
Because it's both. 180° east longitude and 180° west longitude are both the same line, exactly halfway around the world from the Prime Meridian.
90 degrees
90 degrees west
90 degrees
No. The Prime Meridian is. The International Dateline nominally (but not exactly) follows the 180° meridian ... exactly opposite and half a world away from the Prime Meridian.