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SAI INTERNATIONAL SCHOOL
STD VI SUB:GEOGRAPHY
CH-2 SUBTOPIC-3 LONGITUDES MINDMAP-3
LONGITUDE
Lines of reference to
locate places
Vertically Prime
drawn from Meridian at
South pole 0°-Greenwich
to North Measured in
pole. Total: 180
Degrees(°) meridians to
the East and
Minutes(‘) West of
Distance Greenwich
Seconds(“)
between
meridians Meridians are
decreases semi circular.
and Two
becomes meridians
0 at poles.
One toEast
and to West
make full
circle.