With the Fillet command, you can combine two 2-dimensional lines, arcs or circles that you have selected in the drawing area by using a suitable arc with a certain radius.
Location of the Fillet Command
You can access the Fillet command under the Modify title of the ribbon menu Drawings tab .
Fillet - Chamfer Settings
The 1st distance determines how much the first line selected will shorten from the intersection point during the chamfer operation.
The second distance determines how much the selected second line will shorten from the intersection point.
Radius determines the radius of the arc to be used in the join.
Click the Chamfer icon in the ribbon menu .
Click the first and second line.
Lines will join through another line.
Choosing the first line
Second line selection