I have been using KiCAD for a long time and it is unfortunate to take note that drawing of geometric shapes is much limited and it is practically advisable you do the design in another software like the fusion 360 then import the DMX file into KiCAD to proceed with the design.
You mean DXF? But yeah, when you need a tiny bit fancy stuff, you are better off using a third-party CAD tool and importing the shapes back in KiCad. A bit annoying, but KiCad is not a general-purpose 2D-CAD software, so that's understandable.
As always with software, users may individually think that their own dearly missing feature would be no big deal to add, but just pile up demands from a few users and you already get close to a full-fledged 2D CAD thing. But sure, the heavyweight commercial software are much better equipped in that regard.