Question

converse: a potagon has five sides

Answer 1

The converse of an implication such as p -->q (read as "p implies q") is the following:
"q --> p".

In the stated problem: a potagon has five sides,
p: potagon
q; has five sides

The converse:
If a polygon has five sides, then it is a potagon.

I think that "pontagon" is meant to be pentagon.

So, you might want to think of the converse as

If a polygon has five sides, then it is a pentagon.

@sammypogi112