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.

Question

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.

563blackghost · Answer

Which do you think the answer is?

mathstudent55 · Answer

Do you know what all the terms used above mean?

anonymous · Answer

yes but idk which one

mathstudent55 · Answer

Start with the first choice, A.
A parallelogram is a rhombus.

Can a parallelogram be a rhombus?
Can a parallelogram be not a rhombus?

anonymous · Answer

i think it can be a rhombus

mathstudent55 · Answer

Yes, a parallelogram with all 4 sides congruent is a rhombus.
Now you know a parallelogram can be a rhombus.

Can a parallelogram not be a rhombus?
Can you have a parallelogram that does not have all 4 sides congruent?