Click Connect
from the Profile toolbar (Spline sub-toolbar).
The connect options appear in the Sketch tools toolbar. By
default, the Connect with a Spline option is active, and its
related options are displayed.
Click the Connect with an Arc option
.
Select a first element to connect (starting point), and
then a second element (ending point).
The point on which you click to select the first and the second
element is important: the closest point to where you click will be used
as the starting point and the end point of the connecting curve. Always
click close to the point you want to connect, or click the point itself.
A connecting arc appears, tangent to both selected elements.
You cannot trim
nor break
conic curves. To workaround this restriction, you can project the conic
curve of interest onto another sketch, then trim the projected elements.