ANSWER
The hexagons are similar because the side lengths of ABCDEF are reduced by the same scale factor to form hexagon GHIJKL
Step-by-step explanation
Two polygons are similar if they have congruent corresponding angles, and the ratio between corresponding sides is constant. This ratio is called the scale factor.
In this case, we know that each side length of hexagon ABCDEF is divided by 2 to form hexagon GHIJKL. In other words, hexagon ABCDEF is scaled to form hexagon GHIJKL by a scale factor of 1/2. Therefore, these two hexagons are similar.
Hence, the hexagons are similar because the side lengths of ABCDEF are reduced by the same scale factor to form hexagon GHIJKL.