If a diagonal of a parallelogram are equal then show that it is a rect

1.	If a diagonal of a parallelogram are equal then show that it is a rectangle
Answer» In parallelogram, all properties are of rectangle except diagonal.Given that diagonals are equal,it is property of rectangle So if diagonal are equal them it is a rectangle let a // ABCD then,AB=DC(//side of a //gm)AD=BD(//side of a//gm)DB=DB(common)◀ABD=~▶DBC(sss) Parallelogram never having same diagonal and having then it is not a parallelogram it is a rectangle only

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