Look for it in the middle of the Pacific Ocean.
The longitude of such a place is 90° West. On any randomly chosen map or globe, there may or may not be a line printed to show that longitude.
Longitude goes up to 180 East and 180 West.
There are 180 degrees of east longitude and 180 degrees of west longitude, for a grand total of 360 degrees of longitude around the Earth. You're free to draw as few or as many 'lines' through that range on your map or globe as you feel will make you comfortable. There is no standard set of 'lines' that everone is required to use.
Longitude can be measured in values ranging from -180° to +180°.
There is no "last line" of longitude. The longitude of points on the earth's surface ranges from zero to 180 degrees east and zero to 180 degrees west. There is no number within this range that doesn't describe billions of points, and no place on earth that doesn't have a longitude. Your map or globe may include a few widely spaced lines to indicate selected longitudes, or it may not. If it does, you should not fall into the trap of believing that those are the only longitudes that exist.
180° of longitude are marked off east of the Prime Meridian, and another 180° west of it. You're free to draw in as many reference lines on your map as you'd like. There's no set number of lines, that you have to pick one from when you measure the longitude of a place.
The difference between those two positions is 180 degrees in longitude.
The spherical Earth has 360° of total longitude, divided into 180° east of the Prime Meridian and 180° west of the Prime Meridian.So the highest value for longitude is 180° (this is nominally the International Date Line, and 180° E is the same meridian as 180° W)
180
The spherical Earth has 360° of total longitude, divided into 180° east of the Prime Meridian and 180° west of the Prime Meridian.So the highest value for longitude is 180° (this is nominally the International Date Line, and 180° E is the same meridian as 180° W).
360 degrees. Longitude runs from 180 degrees East to -180 degrees West.
Longitude measures the angle east and west from the prime meridian rangimg from -180 to +180. Positive longitude values are in the eastern hemisphere and negative longitude is in the western hemisphere. Of special note is the 180th parallel line which is both -180 and +180 and also closely aligned to the International Date Line.