The collinearity of barycenters related to a polygon

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  1. The collinearity of the barycenters in a triangle. (.ggb)
     
  2. The collinearity of the barycenters in a quadrilateral (.ggb)
     
  3. Illustration for testing collinearity in a triangle. (.ggb)
     
  4. The algebraic definition of centroid for a triangle, quadrilateral and pentagon (.ggb)
     
  5. The collinearity of the barycenters in a pentagon (.ggb)
     
  6. The concurrence of the pentamedians (.ggb)
     
  7. The geometric definition of the barycenter of a pentagon. (.ggb)
     
  8. Arithmetic and geometric experiments in a pentagon. (.ggb)
     
  9. The proof of the collinearity of baricenters in a pentagon (.ggb)