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Geometry 7 Online
OpenStudy (anonymous):

Using a 2-coulmn or flowchart proof, how would I prove the theorem, "If 2 pairs of opposite sides of a quadrilateral are congruent, then the quadrilateral is a parallelogram."

OpenStudy (anonymous):

D:

OpenStudy (anonymous):

D':

OpenStudy (anonymous):

:'''''''''''''''''''''''''''''''''''(

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