What defines a true curve in GIS?

A true curve in GIS is best defined by the mathematical representation that describes its shape. This typically involves the use of equations, such as parametric equations or Bezier curves, which provide a precise and continuous way to delineate the shape of the curve. Unlike a series of vertices or points connected by straight lines, which can only approximate a curve, an equation can define it in a way that captures its fluidity and variable bending.

By using equations, GIS can model complex geographic features more accurately, allowing for better analysis and representation in mapping and spatial analyses. This mathematical foundation allows for precise calculations of length, area, and other geometric properties, further enhancing the capabilities of GIS systems. Hence, an equation that represents the curve is crucial for defining a true curve in a meaningful and accurate way.