A parallelogram is a rhombus if and only if the diagonals are perpendicular
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diagonals are perpendicular
Only if the parallelogram is in the form of a rhombus will its diagonals bisect each other at right angles
Not necessarily. Only if it is a rhombus.
if the diagonals of parallelogram become Perpendicular then the figure is said to be rhombus......
Suppose that the parallelogram is a rhombus (a parallelogram with equal sides). If we draw the diagonals, isosceles triangles are formed (where the median is also an angle bisector and perpendicular to the base). Since the diagonals of a parallelogram bisect each other, and the diagonals don't bisect the vertex angles where they are drawn, then the parallelogram is not a rhombus.