the hexagon GIKMPR is regular. The dashed line segments form 30 degree angles

Answer:
OJ
Step-by-step explanation:
Point J is diametrically opposite point Q through rotation center O. Rotation 180° about O makes O the midpoint of Q and its rotated image (J in this case).
Thus the rotated image of OQ is OJ. (Point O is invariant, since it is the rotation center.)
Answer: The image of of line OH after a rotation of 180 degrees is line ON!!