Tangent lines are lines that smoothly meet an arc or circle. You can draw a line tangent to one or two circles or arcs. For example you might need a tangent line in designing a mechanical cam.
- From the left toolbar enable Snap to Lines.
- Draw a straight line starting away from the curve. When you approach the tangent point, the line will snap to the tangent position.
- Select the two curves.
- Choose Line | Tangents. All possible tangent lines will be created.
- Delete unnecessary lines.