Why in the tests is [11,13,29,31] not a good parallelogram but not [26,11,13,24] ? (the one drawn in picture is {11,13,26,24})
Both set of points don't form a proper geometric figure with points put in this order but can form a parallelogram when put in the right order.
And maybe you should add explicitly the condition if the points need to be in a particular order.
Created at: 2012/11/09 15:49; Updated at: 2013/09/30 13:46