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OpenStudy (anonymous):
Determine if the quadrilateral JKLM with vertices J(3, 3), K(-5, 2), L(-4, -4) and M(4, -3) is a rectangle, using the distance formula.
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OpenStudy (jdoe0001):
in order to be a rectangle, it has to have 2 pair of Equal Opposite sides and their diagonals must be Equal as well
OpenStudy (jdoe0001):
so... using the distance formula, check that JK = LM JM=KL JL=KM
OpenStudy (jdoe0001):
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