A quadrilateral is a shape with four sides.
YES, a quadrilateral does have a line of symmetry.
There is no quadrilateralthat has 1 line of symmetry as quadrilaterals have to have at least 1 line of symmetry.
Yes
A rhombus
A kite, for example.
parallelogram
nonagon
Irregular quadrilateral
Yes - some trapezoids can have one line of symmetry.
parallelogram * * * * * A parallelogram does have rotational symmetry (order 2).
A kite or an equilateral trapezium.
Parrallelogram (it has rotational symmetry but no lines of symmetry)