Problem:

Quadrilateral ABCD is a rectangle. 

Which of the following is NOT a conclusion you can make about ABCD?

Draw a figure which supports your answer.

A.    All sides are congruent.

B.    The diagonals are congruent.

C.    Opposite sides are congruent.

D.    Opposite angles are congruent.

Answer:

Statement  A

Although the sides may all be congruent if ABCD is a square, this does not have to be true since not all rectangles are squares.

                       A                                   B

                             D                                   C