2+2
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Surveying
Surveying terminology. The measure of distance along a slope. The distance of a line where elevation changes from point 1 to point 2
To calculate the x-coordinate of the midpoint of a horizontal segment, you simply take the sum of x-coordinate of the endpoints of the horizontal segment and divide this by two. An example is if one is given endpoints with th x and y coordinates 2,3 and 5,6. To find the midpoint of the x-coordinates add 2 and 5 and divide this by 2, or 7/2.
"Parallels" of latitude. Those are the lines that are drawn horizontal on the globe or map.
Parallel lines never intersect and always remain equal distance from each other.