A closed wiggly line.
or
many irregular polygons such as scalene triangle, ordinary quadrilateral, trapezium (if not isosceles), etc.
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A parallelogram
An irregular quadrilateral.
There is no such shape. A 2d shape with 5 sides and all equal angles must be a regular pentagon (or a 5-pointed star if you stretch the definition of "all angles"). And a regular pentagon - or star - has 5 lines of symmetry.
a circle.
a pentagon has 5 lines of symmetry