Find the Maximum Fillet/Chamfer Radius for Closed Polygons
When you are working with a closed polygon (Fill, Polyline, Slab, Roof etc) and want to apply a radius or chamfer to a corner you do not need to guess the maximum value, or work it out manually - you can get ARCHICAD to do this for you, automatically.
To find the maximum value is really simple - you select your closed polygon then click a corner and choose the Fillet/Chamfer… option as shown with the Fill below: