Yes
YES, a quadrilateral does have a line of symmetry.
A quadrilateral has 4 line segments
A quadrilateral is a shape with four sides.
A Trapazoid
Yes
when a quadrilateral is crossed over, so which means one line is crossed over another line then joins to make the shape.
There is no quadrilateralthat has 1 line of symmetry as quadrilaterals have to have at least 1 line of symmetry.
Line segment
A quadrilateral.
Irregular quadrilateral
nonagon
A square