What are contour lines?
Contour line, a line on a map representing an imaginary line on the land surface, all points of which are at the same elevation above a datum plane, usually mean sea level.
The diagram illustrates how contour lines show relief by joining points of equal elevation..
What are the types of contour lines in art?
There are several different types of contour line drawings:Blind Contour. ‘Blind contour drawing’ is when contour drawing is done without looking at the paper AT ALL. … Continuous Line Contour. … Modified Contour. … cross-contour. … YOUR ASSIGNMENTS:
What is the purpose of contour lines?
Contours are imaginary lines that join points of equal altitude above the same reference level, the sea level in most cases. The purpose of contour lines is to represent the tridimensional shape of the terrestrial surface on a bidimensional map.
What are 3 types of contour lines?
There are 3 kinds of contour lines you’ll see on a map: intermediate, index, and supplementary.Index lines are the thickest contour lines and are usually labeled with a number at one point along the line. … Intermediate lines are the thinner, more common, lines between the index lines.More items…
What are the 5 Rules of contour lines?
Rule 1 – every point of a contour line has the same elevation. Rule 2 – contour lines separate uphill from downhill. Rule 3 – contour lines do not touch or cross each other except at a cliff. Rule 4 – every 5th contour line is darker in color.