Question

in a quadilateral ABCD, we have ab +bc+cd+da >....................​

Answer 1

hey mate here is your answer

in a quadilateral ABCD, ab +bc+cd+da > ac+bd

hope it may help you

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Answer 2

Rhombus

Rhombus: Definition And Properties:

A rhombus is a quadrilateral in which all the four sides are equal, but diagonals are unequal. The diagonals of a rhombus bisect each other at right angle. If ABCD is a rhombus, then AB = BC = CD = DA, And AC is not equal to BD.