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.
Add together the lengths of all four sides of the parallelogram, or,add together the lengths of a pair of adjacent sides and then double the result.
If the lengths of adjacent sides are s and t, and the angle between then is x, thenarea = s*t*sin(x).
If the adjacent sides are of lengths x and y units and the angle between then is t, then,Area = a*b*sin(t).
No. The information is not sufficient to determione the area. You can "squash" the parrallelogram and so reduce its area at will.
no
No.
yes
Yes.
yes
4
No, a parallelogram is not a trapezoid.