Round, traditionally the dough was spun to make it super thin

Square, simplest shape of getting the round pizza boxed

Triangle, when you split round edible things you end up with a triangle, also is more stable to eat

Understand women?

Then you can breathe in space too.

Just say yes. ^^

Or if you order from Jets it is a rectangle pizza in rectangle box cut into rectangle slices. You are ordering from the wrong pizza shop. 🫡