In the figure below, prove that the
area S1 of the
central triangle region DFH determined by trisection of each
side of a triangle ABC and connecting the corresponding points
A', A", B', B", C', and C" with the opposite vertex is given by
1/25 the area of triangle ABC.
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![Elearning 124: Triangle, Area, Similarity](p124_area_triangle_similarity.gif) |