Yes, I also do this here:
Triangle = that which has three sides that are perfectly straight. Where is the proof? It’s in the semantic. Rejecting this is contradictory (semantically-inconsistent).
This is the way reason and semantics work. You assume that meanings actually mean what they mean, and you do/judge/act with sincerity to the semantics that you are aware of (if you are seeking to be sincere to truth).
If you are unaware of the semantic of triangle, then you will not understand what a triangle is. If you are unaware of the semantic of God or a perfect being (or that which perfectly exists), then you will not understand the OP.