Curve: Create Tangent from Curve

Function

Create a Tangent line at a point on a selected Curve..

Call

Geometry > Curve > Create 3D > Tangent From Curve

<Tangent Line From Curve>

Select Tangent Edge

Select an Edge from which a Tangent line will be created.  Any type of edges may be selected.
 

Automatic Ratio by Picking

Create a Tangent line on the selected edge at the point of click for selecting the edge. The Ratio is auto-calculated and entered.
 

Ratio

The Ratios for the start and end points are 0 and 1 respectively.
 

Distance

Enter the length of the Tangent line.