document.write( "Question 249738: Use the coordinate plane, the figure below, coordinate proof strategies, and the lengths and slopes of and to verify this theorem:
\n" ); document.write( "Given: QUAD is a quadrilateral.
\n" ); document.write( " P, G, R, M are the midpoints of the sides
\n" ); document.write( "Prove: The polygon formed by joining adjacent midpoints of a quadrilateral is a parallelogram.\r
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Algebra.Com's Answer #182483 by math1745(1)\"\" \"About 
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