Nothing has 1 order of rotational symmetry because in rotational symmetry 1 is none.
circle
A circle, square, and a triangle all have rotational symmetry.
There are 10 letters in the alphabet that achieve rotational symmetry when displayed in their capital form. These letters: A, H, I, M, O, U, V, W, X, and Y.
H,i,o,x
Irregular shapes don't ever have rotational symmetry.
none shapes have 1 rotational symmetry because in rotational symmetry one is none
Nothing has 1 order of rotational symmetry because in rotational symmetry 1 is none.
squares
circle
A star
squarerhombusdiamondrectangle
The letters H and Z have both line symmetry and rotational symmetry
H, I, O, and X have rotational symmetry.
A circle, square, and a triangle all have rotational symmetry.
None normally because rotational symmetry is only applicable to 2 dimensional shapes such as polygons.
I, H, N, O, S, X & Z all have rotational symmetry.