Use the figure below to answer the question that follows. B C A D If quadrilateral ABCD shown is a parallelogram, which of the following statements must be true? (A) Triangle ABD is congruent to triangle CDB. (B) Diagonal BD is perpendicular to diagonal AC. (C) $\frac{AD}{CD} = \frac{CD}{AB}$ (D) The sum of the measures of angles DAB and BCD is 180°.
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A parallelogram is a quadrilateral with opposite sides that are parallel and equal in length. Additionally, opposite angles are equal, and consecutive angles are supplementary (add up to 180 degrees). The diagonals of a parallelogram bisect each other but are not Show more…
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