the lines that join points of equal elevation above the mean sea level are known by the name contour line.
the lines that join points of equal elevation above the mean sea level are known by the name contour line.
the lines that join points of equal elevation above the mean sea level are known by what name?
contour line
a contour line (also isoline, isopleth, or isarithm) of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value. it is a plane section of the three-dimensional graph of the function "f"("x", "y") parallel to the "x", "y" plane. 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. the contour interval of a contour map is the difference in elevation between successive contour lines.
contour line
metres above sea level









































metres above mean sea level (mamsl) or simply metres above sea level (masl or m a.s.l.) is a standard metric measurement in metres of vertical distance (height, elevation or altitude) of a location in reference to a historic mean sea level taken as a vertical datum. mean sea levels are affected by climate change and other factors and change over time. for this and other reasons, recorded measurements of elevation above sea level might differ from the actual elevation of a given location over sea level at a given moment.









































section::::uses.
metres above sea level