Fillet and Chamfer tools create rounded or angled corners on objects with precise dimensions.

Fillet
You can create a fillet between two intersecting lines or a corner of an object. If you do not create the fillet numerically, it will be created with the last values used in the numeric input dialog box. To try this tool, first create a rectangle in scale with the CAD Rectangle tool. Select the Fillet tool and click one of the intersecting lines you plan to fillet. Then click the second intersecting line to open the numeric input dialog box. Enter the fillet radius value to create the radius. To automatically create additional fillets with the same radii, use the alt/option key while clicking the adjacent line.

Chamfer
This tools works much like the Fillet tool. The chamfer offset must be defined in the numeric input dialog box. The chamfer offset is the distance between the chamfer endpoint and the original corner or intersection.