> Is this not the case as you see it? Yeah I see it your way. Perimeter doesn't change, but the area does. But it's not a triangle. For instance, the internal

> Is this not the case as you see it? Yeah I see it your way. Perimeter doesn't change, but the area does. But it's not a triangle. For instance, the internal angles don't add up to 180, and they never tend to either as you fold more and more.