always
A parallelogram has both pairs of opposite sides parallel. A trapezoid has only one pair of sides parallel.
The information given would suggest that the polygon in question is an isosceles trapezoid and not a parallelogram
a paralleogram has four sides
no
A Rhombus
Yes.
Yes
No.
In general, no.
No
yes it it is
A paralleogram has no meaning. However, a parallelogram is a four sided plane (2-dimensional) figure which has two pairs of [opposite] sides that are parallel.