A straight-line segment within a profile is called ______________.

A straight-line segment within a profile is called ______________.

• A. A Chord
• B. A Section
• C. A Tangent
• D. A Curve

Answer: (C)

The straight-line segment inside a profile is called a tangent. In a Civil 3D profile, the elevation path along an alignment can include straight portions (tangents) and curved portions (vertical curves). A tangent represents a section with constant slope and no curvature, essentially a line that touches the adjacent curve at its end without bending. This distinguishes it from a curve, which has curvature, and from a chord (which connects two points on a curve but is not itself the path of the profile) or from a generic section that doesn’t specify straightness. In practice, profiles are described as tangents and vertical curves, so recognizing a straight segment as a tangent aligns with how design profiles are interpreted.

The straight-line segment inside a profile is called a tangent. In a Civil 3D profile, the elevation path along an alignment can include straight portions (tangents) and curved portions (vertical curves). A tangent represents a section with constant slope and no curvature, essentially a line that touches the adjacent curve at its end without bending. This distinguishes it from a curve, which has curvature, and from a chord (which connects two points on a curve but is not itself the path of the profile) or from a generic section that doesn’t specify straightness. In practice, profiles are described as tangents and vertical curves, so recognizing a straight segment as a tangent aligns with how design profiles are interpreted.