Question

what are latitudes and longitudes?

Answer 1

Latitudes and longitudes are angles that uniquely define points on a sphere.Latitudes are also called parallels.Longitudes are also called meridians.Latitude is referred with respect to an equitorial reference plane.Longitudes is defined in terms of meridians.

Answer 2

Longitude is an imaginary line that runs vertically from pole to pole. They are 360 in number. The lines of the longitude are semi circle and of same length.
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Latitude is also an imaginary line that runs horizontally. They are 180 in number.