An Square
Hexagon
Polygons that are rectangular
Done!
A circle or sphere has an infinite number of lines of symmetry.
Pentagon
circle, sphere, cylinder
A square
It can be any polygon with more than three sides.
A shape with four sides has more vertices because there are more points where edges (straight lines) meet than a 3-sided shape.
Most shapes will have more than two sides. If the sides are straight lines, the shapes MUST have more than two sides.
Any polygonal shape, other than a triangle can have perpendicular lines.
Any polygon, other than a triangle, can have a pair (or more) of parallel lines.