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geometry

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find other endpoint of line segment with a given endpoint and midpoint

endpoint (2,1) Midpoint (-7, 2)

  • geometry -

    easy.
    distance from point to midpoint
    x: 2- -7=9
    y: 1-2=-1

    so the new x,y is (-7-9, 2+1) or (-16,3)

    check my thinking

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