This angle represents the total change in direction between the two tangent lines that a curve connects. It is a fundamental parameter in curve geometry, used alongside the radius to calculate the tangent distance, arc length, and chord length. Surveyors must know this value to lay out road alignments, property boundaries, and right-of-way curves accurately.
Heard on the job
I have a radius of four hundred feet and a delta of forty-five degrees, so I can compute the rest of the curve data.
Also heard as
- central angle
- intersection angle