A parallelogram IS a polygon so the question is misguided.
A 4 sided parallelogram is an irregular polygon
No, but a parallelogram is a polygon.
No. A parallelogram is a polygon, though.
Yes a parallelogram is a polygon.
No because it is a 9 sided polygon whereas a parallelogram is a 4 sided polygon
A parallelogram is a 4 sided polygon
a polygon
Yes
No, but it can be a parallelogram.
Yes. It is not a question of "can it be". A parallelogram is a polygon - by definition.
A 4 sided parallelogram is an irregular polygon