http://i33.tinypic.com/rqw8et.gif i cant under why its call rectangle law?
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Originally Posted by transgalactic http://i33.tinypic.com/rqw8et.gif i cant under why its call rectangle law? In France it is called parallelogram law, because it states is that, in a parallelogram, the sum of the two squared lengths of the diagonals equals the sum of the four squared sidelengths. (This parallelogram has vertices )
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