what are latitudes parallel but not of the same size
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Yes, no, and not really but it depends.
Lines of latitude are parallel. They are, in fact, sometimes called parallels, as in "The 45th Parallel" which is actually a marked point along several major interstates in the western US. However, because of this, they are different sizes -- the circles closer to the poles are smaller.
Lines of longitude aren't parallel, but they are all the same size -- they all form great circle routes around the earth, which means that a line of longitude is the shortest line passing through a certain point that divides the world exactly in half. The equator is the only line of latitude which is also a great circle.
Lines of latitude and longitude are technically perpendicular, in that they all meet each other at 90 degree angles. However, due to the earth being a globe, you can't actually render them in normal 2D geometry anyways, so unless you want to get into elliptical geometry they're only perpendicular for the sake of our maps.
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Lines of latitude are parallel. They are, in fact, sometimes called parallels, as in "The 45th Parallel" which is actually a marked point along several major interstates in the western US. However, because of this, they are different sizes -- the circles closer to the poles are smaller.
Lines of longitude aren't parallel, but they are all the same size -- they all form great circle routes around the earth, which means that a line of longitude is the shortest line passing through a certain point that divides the world exactly in half. The equator is the only line of latitude which is also a great circle.
Lines of latitude and longitude are technically perpendicular, in that they all meet each other at 90 degree angles. However, due to the earth being a globe, you can't actually render them in normal 2D geometry anyways, so unless you want to get into elliptical geometry they're only perpendicular for the sake of our maps.
HOPE IT HELPFUL DEAR
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