The perimeter of the polygan ABCD is sum of the lengths of its sides AB+BC+CD+DA
Using formula to find distance between two points, we can calculate the lengths as follows:
AB= 
3√5
BC=
CD=
DA= 
Therefore Perimeter= 10
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The perimeter of the polygan ABCD is sum of the lengths of its sides AB+BC+CD+DA
Using formula to find distance between two points, we can calculate the lengths as follows:
AB= 3√5
BC=
CD=
DA=
Therefore Perimeter= 10
*********