The figure below shows a quadrilateral ABCD.
Points E, F, G, H, M, N, P, and Q trisect the sides (divide each side into three equal parts). If S1, S2, S3, and S4 are the areas of the shaded quadrilaterals, prove that: S1 + S3, = S2
Sketch of problem 961
Ten Problems 961-970
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