J.R. S. answered 03/28/21
Ph.D. University Professor with 10+ years Tutoring Experience
I would agree with all your answers. I would add however, that typically "flat trigonal" would be referred to as trigonal planar, and "flat linear" would simply be referred to as linear (can you have something that is linear and not flat?). Hmm...
Anyway, given the choices offered, I agree with all of your answers.