Yes, I know Sacred Geometry gets a lot of hate for good reason. It can slow down a game or be very powerful for casters.
Those are not what I am interested in.
When you take this feat, select two metamagic feats you do not yet have. When casting a spell, you can perform the steps below to spontaneously apply the effects of either or both of these metamagic feats, as well as any other metamagic feats you have
My question is about the metamagic feats selected. Would a caster who's taken this feat be able to use the selected metamagic feats without using them with sacred geometry?
There is no mention in the feat which says anything about using them, or what happens if you select those feats later.