An odd shape

An odd shape

I am not fit to fill a circle
I will fill a square or triangle
My mouth is agape
My friend has a shape
That both fit and will a circle fill

Alan Grace
2 October 2017

Two more versions:

I am not fit to fill a circle
I will fill a square or triangle
Heaven forbid
A pyramid
A form fits both and will circle fill

Alan Grace
3 October 2017

Or

I am not fit to fill a circle
I will fill a square or triangle
Pharoah forbid
A pyramid
A form fits both and will circle fill

Alan Grace
3 October 2017

Which version do you prefer?

Daily prompt: Circle