abcd is a quadratic p, q , r , and s are the point of trisection of sides ab , bc , cd and da respectively and are adjacent to a and c ; prove that pqrs is a parallelogram
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Proof Since P,Q,R and S are the points of trisection of AB,BC,CD ... BP=2PA, BQ=2QC,DR=2RC and, DS=2SA ... S and R divide the sides DA and DC respectively in the ...
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