Constrains two curves to maintain a point of tangency to each other or their extensions.

Find

This command is equivalent to the Tangent option in GEOMCONSTRAINT.

Following are the valid constraint objects and points:

- Line
- Polyline segment
- Circle, arc, polyline arc, ellipse
- Combination of circles, arcs, or ellipses

A circle can be tangent to a line even if the circle does not touch the line. A curve can be tangent to another even if they do not physically share a point.