There is only one Arctic Circle.
They are specially marked because, they are the most north and south on the lines of latitude. During the summer solstice, the sun beams directly on these points ( the two arctic circles)
No. The circles are circles. The poles are points. If the circles were points, then they might be called the Arctic and Antarctic Poles, but they wouldn't be called the Arctic and Antarctic Circles since they would be only points.
arctic circles
One.
Near the Arctic Circle.
the Arctic one
Latitude maps include both the Arctic and Antarctic Circles.
These two lines of latitude mark locations on Earth beyond which there is at least one 24-hour period with no sunrise/ sunset per year.
Polar Zones
67 degrees i think.
roughly 1700 miles
66.5622 degrees north and south