Are the polygons similar? if so, explain.

For both figures to be similar, their corresponding sides must be at the same ratio all around and, their angles interior and exterior ones must be congruent.

the angles at F and H is 119°, meaning the angles at G and E is 360° - 119° or 241°, because a quadrilateral has a total of 360° for interior angles.

now, the angles at A, B, C or D, none of them match any of those, thus, no dice.