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OpenStudy (anonymous):
Which parallelograms have perpendicular diagonals? A rectangle, rhombus b square, rhombus c square, rectangle d none
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Directrix (directrix):
Go to the page at this link and scroll down a bit and look for "Perpendicular Diagonals." https://math.okstate.edu/geoset/Projects/Ideas/QuadDiags.htm
OpenStudy (unklerhaukus):
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OpenStudy (unklerhaukus):
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