A projected coordinate system is established based on
A) a datum
B) a map projection and its parameters
C) a linear unit of measure
D) all of the above

Question

Quizplus · Accepted Answer

A projected coordinate system is established using a combination of a datum, a map projection and its parameters, and a linear unit of measure. The datum serves as the reference framework for the coordinate system, the map projection determines how the Earth's curved surface is flattened for display on a map or computer screen, and the linear unit of measure defines the scale and accuracy of the coordinate system. Therefore, all of the above choices are necessary for establishing a projected coordinate system.

A Projected Coordinate System Is Established Based on