The poles.
#1. To know where they are. #2. To help them figure out how to get where they're going.
All lines of longitude have the same length. Each one is 1/2 of the earth's polar circumference ... roughly 12,437.6 miles. (rounded)
Ignoring curvature of the earth, and assuming a mean Earth radius of 3960 miles, then the distance between lines of longitude that are 1 degree apart = 3960 * 2 * pi /360 * cosine (of latitude) in miles. At the equator it is about 69 miles, at the poles it is zero.
All points on Earth with zero latitude and every longitude form the equator. All points on Earth with zero longitude and every latitude form the Prime Meridian.
Latitude measures distance north or south of the equator and longitude measures west and east of the prime meridian the grid system formed by lines of latitude and longitude makes it possible to find the absolute location of a place. Because that certian point where the lines meet is where you are. And you use degrees to label the spot like EX. 40 degrees 44' north and 73 degrees 59' west.Its a big grid. Like a co-ordinate plane you can find the point (5, 2) the same way you look at a map. GPS can also help find long./lat. Its almost like mapquest or google maps. It just tells you where it is.A person can determine their position on the Earth's surface to as great a degree of accuracy as they wish using latitude and longitude. . I am at 35° 40' 34.56" and longitude 175° 15 mins 20.09secs.You can use decimals of a second to get greater accuracy.
2 Lines in the same plane that do not meet are parallel. If 2 lines are in different planes and do not meet, then they are called skew lines.
When 2 or more straight lines meet...the point where they meet is called the point of intersection
nonparallel lines
ok easy its called the north of south poles(def/how: all those latitudes and longitudes of the globe[the lines that go up and down]are all straight but since the earth is round on a globe youl see then to curve and meet at once single point but theres two areas were they meet the north pole and south pole
perpendicular
An intersection.
Latitude: N 35° 8' 58.3235" Longitude: W 90° 2' 56.3284"
What 2 lines of latitude cross north American
1 line i guess
"right angle" is two lines that intersect at 90 degrees "acute angle" is when 2 lines meet at less than 90 degrees "obtuse angle" is when lines meet at an angle more than 90 degrees , a straight angle is when 2 lines meet at exactly 180 degrees.
It is the Intersection of 2 or more lines. Such as in the letter V, the vertex is the point at the bottom when the 2 lines meet.
It depends on the lines! They can meet at 0, 1, 2 or 3 points.