# My quadrilateral has congruent diagonals. What must it be?

Your quadrilateral must be an isosceles trapezoid.

Note that rectangles and squares also always have congruent diagonals, but an isosceles trapezoid is the most general term for all the possibilities, since rectangles and squares are isosceles trapezoids in addition to having their own unique properties.

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If a quadrilateral has congruent diagonals, it must be a kite.

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