Limit of iterated midpoint polygons

Question

Consider an arbitrary polygon $p$, and then take its midpoint polygon $p'$. Repeat this process to create $p''$, $p'''$, etc. Is there always a convex polygon in this series?

score 1 · Answer 1 · edited Apr 13 '17 at 12:58

1

See the MO question, "'Derived' polyhedra and polytopes." See especially the answer by Gjergji Zaimi, who says:

"the limiting shape ... is in fact the affine image of a regular $n$-gon"

edited Apr 13 '17 at 12:58

Community

1

answered Apr 05 '17 at 16:32

Joseph O'Rourke

30,327

Limit of iterated midpoint polygons

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