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Let P(11, 7), Q(13.9, 4) an dR(9.5, 4) b...

Let P(11, 7), Q(13.9, 4) an dR(9.5, 4) be the mid points of the sides AB, BC and AC respectively of `triangleABC`. Find the coordinates of the vertices A, B, and C. Hence find the area of `triangleABC` and compare this with area of `trianglePQR`.

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