Layout > Working with Entities > Creating Entities > To Create Chamfers
  
To Create Chamfers
1. On the Design tab, click Chamfer.
2. Select the first line.
3. Select the second line, nonparallel line to the first line. The lines are trimmed and connected by a chamfer and the dimension scheme box appears in the mini toolbar. Construction lines with dimensions extend from the selected points.
4. To select another dimension scheme, click one of the dimension schemes in the mini toolbar:
To define an isosceles chamfer by distance, click and edit the value.
To define a chamfer by an angle and a distance, click or and edit the values.
5. Middle-click to exit the tool.