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Lewis Carroll's finding (Posted on 2017-06-25) Difficulty: 3 of 5
Given a triangle ABC, draw lines from each vertex to the opposite side so that all three lines meet.
Label the points on those sides D, E, F.
Label the meeting point O.
See on your drawing that the order of the labeled points on the perimeter is AFBDCEA.

Show that DO/DA + EO/EB + FO/FC = 1 for any triangle.

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
SolutionSolutionHarry2017-07-01 15:34:00
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