Recall properties of symmetry:
- Line - reflection mirror,
- Rotational - you can rotate it about its center and it will overlap with the initial shape after minimum of 180 degrees rotation,
- Point - the center is acting as a midpoint of the segment formed by opposite points. Rotational symmetry of even order is also a point symmetry.
Using the properties we can state that:
#5
- It has rotational (of order 2) and point symmetry.
#6
#7
- It has rotational (of order 3) symmetry.
#8
- It has rotational (of order 6) and point symmetry.