Its a rounded airfoil tail, if thats what your asking. I think a flat plate tail is also considered symetrical? Its the same on both sides.

Plane is a Colombo Anderson 24% 300L kit. Balsa sheeted foam surfaces. I'm calling it a Extra stretchy.

I'm starting to think its a very sharp trailing edge, considering how long it is. I could try a fuel line on the trailing edge next flight.

Kevin