You get the same figure if you reflect it across a horizontal or vertical line through its center (reflectional symmetry).
You get the same figure if you rotate it 180° (rotational symmetry)
Each point corresponds to another equidistant from the center on a line through the center (point symmetry).
The 4th selection is appropriate.
Just kept adding 6.
The next number = 152 + 6 = 158
