9. Determine the validity of an argument: A polygon is regular or a polygon has a side
which is longer than another side of the polygon. If a polygon is regular then all the
sides of the polygon are congruent. If a polygon has one side which is longer than
another side of the polygon, then an interior angle of the polygon has measure
greater than one of the interior angles of the polygon. Therefore, either the polygon
have congruent sides or an interior angle of the polygon has a measure greater than
one of the interior angles of the polygon.