A trapezium (or trapezoid) need to have any symmetry.
No. A trapezoid does not necessarily have any symmetry.
A trapezoid has no rotational symmetry.
A trapezoid has one line of symmetry.
Only if it is in the form of an isosceles trapezoid
An isosceles trapezoid can be.
There are none but if it is an isosceles trapezoid it will have 1 line of symmetry
None unless it is an isosceles trapezoid then it will have 1 line of symmetry
A trapezoid has no lines of symmetry unless it is in the form of an isosceles trapezoid which has one line of symmetry
Yes, a trapezoid may have two lines of symmetry, but the trapezoid must also be a rectangle.If the trapezoid is not also a rectangle, the the most symmetry lines it can have possible is 1 (this can only occur it's an isosceles trapezoid.)
Not normally but an isosceles trapezoid does.
A "pure" trapezoid (a pair of parallel sides and two random sides) does not have rotational symmetry. If it is a parallelogram then it has a 180 degree symmetry. And if the paralloelogram happens to be a square, you have 90 deg symmetry.
A trapezium does not have rotational symmetry.