The significant lines of latitude are
(a) Equator – 0°
(b) Tropic of Cancer – 23 1/2°N
(c) Tropic of Capricorn – 23 1/2°S
(d) Antarctic Circle – 66 1/2°S
(e) Arctic Circle – 66 1/2°N
(f) North Pole – 90°N
(g) South Pole – 90°S.
(ii) Temperate zone:
From the Tropic of Cancer (23/2°N) to the Arctic Circle (661/2°N) and from the Tropic of Capricorn (23 1/2 0S) to the Antarctic Circle (661/2°S), the Sun’s rays fall slantingly. Moderate temperature prevails in this region. Hence, this region is called Temperate Zone.
(iii) Frigid zone:
From the Arctic Circle (66 1/2°N) to the North Pole (90°N) and from the Antarctic Circle (66 1/2 0S) to the South Pole (90°S), the Sun’s rays fall further inclined, throughout the year. Hence, this region is called Frigid Zone.
