There are several parallelogram depending on the context. One such is that the sum of the squares on the four sides of a parallelogram equals the sum of squares on its diagonals.
yes
no
No.
yes
Yes.
No, a parallelogram is not a parallel.
4
No, a parallelogram is not a trapezoid.
parrallelogram
It is a special kind of parallelogram.
Yes it is a quadrilateral polygon.
180. Degrees