chamfered

A chamfer is a transitional edge between two vertices of an object. It can also be known as a bevel but connotes more often cutting and more often 45°. If the un-chamfered intersection of the adjoining faces would otherwise form a right angle, 90° as is most common, the chamfer will typically be uniform and pitched at 45°. A fully chamfered square interior would thus be octagonal. (By contrast, a fillet is the rounding off of an interior corner, and a rounding of an exterior corner is called a "round". or a "radius")