This is a bit of a trick question! A hole itself doesn't have a shape.

A hole is an empty space *within* something else. The shape of the hole is defined by the shape of the object it's in.

For example:

* A hole in a piece of paper could be round, square, or irregular.

* A hole in the ground could be circular, rectangular, or triangular.

So, the shape of a hole depends on the shape of the object it's missing from.