Order 4.
zero
A square is on example. The perpendicular bisectors of the sides and the two diagonals comprie four lines of symmetry.
Square, circle, rectangle, octagon, pentagon, triangle, hexagon, trapezoid, rhombus. These are just some
one
A Heart or a Triangle.
4
zero
A square is on example. The perpendicular bisectors of the sides and the two diagonals comprie four lines of symmetry.
180 degrees
Square, circle, rectangle, octagon, pentagon, triangle, hexagon, trapezoid, rhombus. These are just some
1
Yes
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.
Yes, of order 2.
A Heart or a Triangle.