Which statement is sometimes, but not always, true?
A.
A parallelogram is a rhombus.
B.
A rhombus is a quadrilateral.
C.
A trapezoid is a square.
D.
A square is a rectangle.
A.
A parallelogram is a rhombus.
B.
A rhombus is a quadrilateral.
C.
A trapezoid is a square.
D.
A square is a rectangle.