longitude
Yes No, lines of longitude are as parallel to each other as the earth is flat. All longitudes intersect at the north and south poles.
Coplanar lines that don't intersect are parallel. Lines that are not parallel and do not intersect are skew lines.
no they are straight lines that never intersect, intersecting lines intersect.
Skew lines never intersect. If two lines intersect, then they are known as "intersecting lines", not skew lines.
longitude
They intersect, yes.
40n, 89w
Yes.
You find the lines of latitude and longitude and find the place that they intersect, which is your location.
The two tropics are lines of latitude at 23°26′13.0″ North and South of the Equator and they intersect all lines of longitude.
If you pick a longitude and mark a dot at every point on Earth with that longitude, the dots will form a line between the north and south poles. The imaginary line is called the "meridian" of that longitude.
All meridians of longitude meet and end at the north and south poles. Although they do converge, they can't be said to 'intersect', because they all stop there and don't go any further.
No. All of them do but two. The latitude lines at 90 degrees North and South actually coincide with the intersection of all longitudinal lines. So technically, because they coincide, they do not form any angle.
Every line of longitude intersects with every line of latitude and vic-versa.
So as to create a particular location on the grid where they intersect.
Lines of longitude are imaginary vertical lines that represent the angular distance, in degrees, minutes, and seconds, of a point east or west of the Prime Meridian (Greenwich). Lines of longitude are often referred to as meridians. The lines of longitude run from the North pole to the South pole and at the poles all the lines of longitude intersect at a single point.