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Which quadrilaterals have
a)perpendicular diagonals
b)opposite angles congruent?
c) two pairs of parallel sides?
d) a pair of congruent, adjacent sides?

My answers
a)rhombus and square
b)rhombus, square, and parallelogram
c)parallelogram, rectangle, and square
d) at first I thought it was a kite, but kite has 2 pairs of congruent adjacent sides so this answer would be a general quadrilateral with 2 sides congruent.

Am I correct or did I forget something?

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