#### Why are there 360? longitudes and 181? latitudes?

Longitude lines runs from North to south pole means a complete circles and hence covers 360 degrees and that is why there are 360 longitudes.

Latitudes tells you how far is the point from equator and hence is denoted by positive value when towards North pole and negative when towards south pole.Each section from equator to pole is 90 degrees and two poles have 2 quarters of circle/globe hence 90X2 180 lattitudes. adding the Equator it becomes 181 latitudes.

#### Deependra Verma

There are 360 longitudes in total +1 equator as we add 1 more in latitude and consider total number of latitudes are 181. As same we should have 361 longitudes in total but we have 360. There is a reason: there are 360 longitudes +1 of Equator=361, but when we make curve of total 180 eastern longitudes +180 western longitudes we find the 180th degree longitude is common from both side as it overlaps each other while making circle. So we have 180+ 179=359+1 of Equator=360 longitudes in total.

Hope you understand...