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construct symmetric wrt point with ungraded ruler (Chile 2015 L2 P1)

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May 26, 2019
geometryconstructionRulerSymmetricparallelogram

Problem Statement

On the plane, there is drawn a parallelogram PP and a point XX outside of PP. Using only an ungraded rule, determine the point WW that is symmetric to XX with respect to the center OO of PP.