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.
no
yes
No.
4
Yes.
yes
No, a parallelogram is not a trapezoid.
parrallelogram
It is a special kind of parallelogram.
180. Degrees
A rhombus
No, a trapezoid cannot be be a parallelogram.