In modern mapping, a topographic map is a type of map characterized by large-scale detail and quantitative representation of relief, using contour lines but, historically, using a variety of methods.

The elevation of a geographic location is its height above or below a fixed reference point, most commonly a reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational surface.

Added 9/9/2014 4:47:48 AM

This answer has been confirmed as correct and helpful.

There are no comments.