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ABCD is quadrilateral. Is AB+BC+CD+DA <...

`ABCD` is quadrilateral. Is `AB+BC+CD+DA < 2(AC+BD) ?`

Text Solution

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`In/_AOB`
OA+OB>AB-(1)
`In/_AOD`
OA+OD>AD-(2)
`In/_BOC`
OB+OC>BC-(3)
`In/_COD`
OD+OC>CD-(4)
...
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