How are the artic and antartic circle alike?

They both have polar weather conditions and climate, are near the northernmost or southernmost points of the earth. Both circle a pole (North or South pole),and are the same approximate distance from the equator. They're both located at approximately 66° 33' 44" latitude (North and South, respectively wobble with the Earth's wobble). Also, they both mark the extremities of Polar 

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