A parallelogram - including rhombus and rectangle - has 180 degree symmetry. A square has 90 deg.
It has rotational symmetry to the order of 2
A regular nonagon with 9 sides has a rotational symmetry of 9.
Rotational symmetry of order 1.
A line has 180 degrees rotational symmetry.
They have not got any rotational symmetry
Parallelograms - including special cases.
The answer depends on the quadrilateral. Some have rotational symmetry or reflective symmetry and it is not possible to distinguish between these and translations.
A trapezium does not have rotational symmetry.
The letters H and Z have both line symmetry and rotational symmetry
It has rotational symmetry to the order of 2
It has 8lines of rotational symmetry
Equilateral triangles have rotational symmetry.
A trapezoid has no rotational symmetry.
No a Z doesn't have a rotational symmetry
A line has rotational symmetry of order 2.
It has line symmetry (straight down the center) but not rotational symmetry.
It does have rotational symmetry of order three.