What the area of the irregular polygon 4 units2 units9 unitsand 4 units?

Answer 1

The lengths of the sides of any irregular polygon, other than a triangle, does not provide enough information to determine its area. This is because polygons with 4 or more sides are not rigid.

Answer 2

If you mean as in an irregular 4 sided quadrilateral then such a shape is impossible to construct from the given dimensions and so finding its area can't be evaluated.

Answer 3

Not enough information. You also need the angles between the sides.