The answer depends on what characteristic you wish to measure: the lengths of the sides, the angles, the lengths of the diagonals, perimeter, area, temperature, colour, and so on.
yes
No.
no
4
yes
Yes.
No, a parallelogram is not a trapezoid.
parrallelogram
It is a special kind of parallelogram.
A rhombus
180. Degrees
Yes it is a quadrilateral polygon.