I would say "circular pyramid" is intuitive, but "an n-sided pyramid works just the same as a square pyramid" is not. If instead of just a square pyramid, you

I would say "circular pyramid" is intuitive, but "an n-sided pyramid works just the same as a square pyramid" is not. If instead of just a square pyramid, you demonstrated it for regular polygons with sides 3, 4, 5 - I wouldn't need any convincing that the relationship continued to infinity.