None.
A decagon has 10 sides, so it also has 10 angles. Each angle of a decagon is 36 degrees (360 degrees divided by 10). Therefore, a decagon has 10 angles of rotation symmetry.
A general parallelogram has rotational symmetry of order two.
It has 8 rotational symmetry.
A scalene triangle has one order of rotational symmetry.
Yes. A circle has infinitely many lines of symmetry and it also has rotational symmetry of infinite order.
None.
i am not sure but i think a trapezium has 1 order of rotational symmetry
All of them. To be precise, since a circle is perfectly round (in theory, although humans can't reproduce such circularity - is that a word?) it will have infinity rotational symmetry.
I believe that an octagon has 16 lines of symmetry.
The order of rotational symmetry for a circle is infinite. This is because it can be rotated any amount from the middle and it will still look the same. You can use a special sign to show this: ∞
There are no right angles in an octagon.An 8 sided octagon normally has no right angles.
A parallelogram has a rotational symmetry of 2!
triangles have 0 rotational symmetry
it has 5 rotational symmetry
A line has rotational symmetry of order 2.
Rotational symmetry of order 1.