Answer: A. WXYZ is a parallelogram
B.
is a right angle.
D.

E.

F.
is supplementary to
.
Explanation:
Given: WXYZ is a square.
A. A square is a parallelogram because its opposite sides are equal.
B.
is a right angle , since all the interior angles in a square area right angle.
C. A trapezoid has two equal parallel sides and two non-parallel sides.
But square has opposite sides parallel , therefore WXYZ is not a trapezoid.
D. Since all the sides of a square are congruent to each other , therefore

E. Since all the angles of a square are congruent to each other , therefore

F. Since , all the interior angles in a square area right angle.
Thus,

Hence,
is supplementary to
.