Uh.. here is a sentence...
Note there is rotational symmetry in this pattern around the line joining these elements.
Hope this helps. Sorry if it's too late.
180 degrees
4
1
Yes
Order 4.
Three
It would help if you checked your spelling before posting the question. I can guess that "symmerty" is meant to be symmetry but I have no idea what a hepaton is. Sorry.
No. But it does have rotational symmetry of order 2.
zero
Yes, of order 2.
A Heart or a Triangle.
one