Question

For a quadrilateral to be rhombus the diagonals have to be

Answer 1

perpendicular bisectors of each other

Explanation:

For a quadrilateral to be rhombus the diagonals have to be perpendicular bisectors of each other.

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The diagonals of a parallelogram bisect each other. When that parallelogram is a rhombus, the diagonals are perpendicular, hence mutual perpendicular bisectors.