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