Problem 61.Triangle, Trisection of Sides.
Level: High School, SAT Prep, College
Prove that the perimeter of the
central hexagonal region DEFGHM 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
3/20 the sum of AA', AA", BB', BB", CC', and CC".
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