Question

4 How
they
many types of contour lines? what are
9​

Answer 1

Answer:

hi iam Madhu

age 15 boy class 10

living in salem tamilnadu India

Answer 2

There are 3 types of contour lines

Contour lines, as we know them today, came into popular use in the mid-1800s along with the rise of resource extraction industries like mining and logging.  

Ordinary contours are shown with a certain weight. Sometimes supplementary contours are added as dashed lines to show intermediate elevations.

Index contours are shown in a heavier weight and labeled at intervals.

Hachured contours show depressions and have tick marks on the downhill side. These are relatively rare and often not shown if it’s clear from context that there’s a depression, like a crater.