Final answer:
A topographic map is used by engineers for land-use planning and represents the three-dimensional features of Earth's surface in two dimensions through contour lines indicating elevation.
Step-by-step explanation:
An engineer's plan superimposed on a map of land to be developed is known as a topographic map. These maps are crafted to represent three-dimensional features of the Earth's surface in two dimensions. Topographic maps show contour lines that indicate elevation above sea level. Through these lines, the map depicts the shape of the terrain, including hills, valleys, and slopes, and can be essential for anyone needing to survey land for various projects.
Topographic maps have been a fundamental tool for integration and analysis of place-based information, and with the advancement of technology, they can now be displayed on computer monitors using geographic information system (GIS) software. An engineer developing a land-use plan would rely on a topographic map to understand the features of the terrain and to assist in making informed decisions for land development, taking into account potential geologic hazards.