There are actually 7 lines of latitude. Pick the two you want.
Important lines of latitude:
the equator (0°)
the Tropic of Cancer (23.5° north)
the Tropic of Capricorn (23.5° south)
the Arctic circle (66.5° north)
the Antarctic circle (66.5° south)
the North Pole (90° north)
the South Pole (90° south)