Autodesk 3DS Max Practice Exam 2026 – Comprehensive Test Prep

In an animation curve, a keyframe has tangents on both sides that shape how the curve approaches and leaves that point. The left-side tangent describes the slope of the curve as it comes into the keyframe from earlier time, so it’s called the incoming tangent. The right-side tangent governs how the curve leaves the keyframe to the right (the outgoing tangent). So the tangent on the left of the key vertex is the incoming tangent. The other terms—Vector Handles or Bezier—relate to how tangents are manipulated or the interpolation type, but the specific left-side tangent is the incoming one.