Geometry, Theorems and Problems

 Problem 228. Triangle, Midpoints, Exterior line, Perpendiculars

In a triangle ABC, D, E, and F are the midpoints of the sides and A'C' is an exterior line. If a, b, c, d, e, and f are the perpendiculars drawn from A, B, C, D, E, and F to the line A'C', prove that: a + b + c = d + e + f. View or post a solution.
  

Problem 228: Triangle, Midpoints, Perpendiculars 

 

 

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