icebandit:
You should check your Work Environment. Either apply the Standard Profile 14, or if you want to modify the current profile, go to Work Environment > Tool Schemes > Info Box, select Roof Tool, then make sure that Geometry Method is visible and near the top of the list. It is also possible you need to scroll within the Info Box to get to the Geometry Methods.
You should add a Signature to your Profile (click the Profile button near the top of this page) with your ArchiCAD version and operating system (see mine for an example) for more accurate help in this forum.
David