Answer the following:
the line of longitude that is zero degrees longitude is the a) prime meridian b) equator c) international date line.
latitude lines a) run north and south b)measure distance east and west c)are parallel.
the north pole and south pole represent a) 180 b)50 c) 90 d)0 degrees latitude.

1) Longitude lines have all the same length ( that's how i remember them) and determine east-west direction: starting at the Prime Meridan (that's the right answer): west of it are the lines with western coordinates, and east with eastern!

2) latitude lines run east and west, but the are c) parallel!

3) Both poles are at 90 degrees (North and South respectively)