None.
Two.
It has 1 order of rotational symmetry.
None - it has rotational symmetry - not reflection symmetry.
4
None.
None.
None.
Two.
2
it has order two (180 degrees)
It has 1 order of rotational symmetry.
1
None - it has rotational symmetry - not reflection symmetry.
4
Order 2.
Only one.