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.

C because a trapezoids are built by 3 triangle. It can’t be built by a square. Even if you tilt it you won’t see a square.
~JZ

The answer is D because every square is a rectangle but not every rectangle is a square

Use graph paper and a straightedge to draw the figure.  

The set of points (4, 9), (6, 12), (8, 9), and (6, 6) identifies the vertices of a quadrilateral.  

Which is the most specific description to tell which figure the points form?
 
 A.
trapezoid
 
 B.
rhombus
 
 C.
square
 
 D.
parallelogram


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