Question

Read the para 'Contour Lines' on page 5 and
comment on it.​

Answer 1

Answer:

In cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. A contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

Answer 2

Answer:

A contour line of a function of two variables is a curve along which the function has a constant value.In cartography, a contour line joins points of equal elevation above a given level, such as mean sea level.

Contour lines are curved, straight or a mixture of both lines on a map describing the intersection of a real surface with one or more horizontal plains.