It can have anywhere between 0 and 12 pairs of parallel sides.
rhombus
a trapizoid is the 2d shape for that
A Parallelogram.
A triangle as no other 2d shape can have 3 sides.
A 2D shape with 9 sides is called a Nonagon.
The shape of 2D is a flat surface.
a square or if I'm certain a rectangle =D
A 2D shape that has four sides and is thirteen letters long is a quadrilateral.
Any 4 sided 2D shape
No. A 2d shape is a plane area, which may be regarded as a face, which is bounded by a side or sides.
2d shapes that do not have equal sides do not usually have special names.