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QR is parallel to ST and PQ:QR = 2:1. Given the area of triangle PST is 18cm2, the area of triangle PQR in sq cm is?

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asked by Stefan
  1. Is ST a line in the interior of PQR?

    If so, I must be missing something. Just knowing the ratio of two sides of PQR tells me nothing about the areas of either triangle.

    Better explain the overall figure, not just a couple of lines.

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    posted by Steve
  2. PQR is an interior triangle within triangle PST. QR runs parallel to ST.

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    posted by Stefan

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