Change Vertex Mode
Select this mode to change an existing vertex to a different type of control point: corner, Bézier, cubic spline, or fillet (circular arc) point.
 
1.
2.
Click the 2D Reshape tool from the Basic palette.
3.
Click the Change Vertex mode button.
4.
Change vertex does not work on a midpoint handle. Select only a vertex point.
5.

Editing 2D Objects : Reshaping Objects : Change Vertex Mode

Nemetschek NA
Phone: 410.290.5114
Fax: 410.290.8050