Difference between revisions of "2006 OIM Problems/Problem 6"

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== Problem ==
 
== Problem ==
Let <math>n > 1</math> be an odd integer. Let <math>P_0</math> and <math>P_1</math> be two consecutive vertices of a regular polygon with <math>n</math> sides. For each <math>k \ge 2</math>, define <math>P_k</math> as the vertex of the given polygon which is located in the bisector of <math>P_{k−1}</math> and <math>P_{k−2}</math>. Find for what values of <math>n</math> the sequence <math>P_0, P_1, P_2,\cdots</math>, runs through all the vertices of the polygon.
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Let <math>n > 1</math> be an odd integer. Let <math>P_0</math> and <math>P_1</math> be two consecutive vertices of a regular polygon with <math>n</math> sides. For each <math>k \ge 2</math>, define <math>P_k</math> as the vertex of the given polygon which is located in the bisector of <math>P_{k-1}</math> and <math>P_{k-2}</math>. Find for what values of <math>n</math> the sequence <math>P_0, P_1, P_2,\cdots</math>, runs through all the vertices of the polygon.
  
 
~translated into English by Tomas Diaz. ~orders@tomasdiaz.com
 
~translated into English by Tomas Diaz. ~orders@tomasdiaz.com

Latest revision as of 16:08, 14 December 2023

Problem

Let $n > 1$ be an odd integer. Let $P_0$ and $P_1$ be two consecutive vertices of a regular polygon with $n$ sides. For each $k \ge 2$, define $P_k$ as the vertex of the given polygon which is located in the bisector of $P_{k-1}$ and $P_{k-2}$. Find for what values of $n$ the sequence $P_0, P_1, P_2,\cdots$, runs through all the vertices of the polygon.

~translated into English by Tomas Diaz. ~orders@tomasdiaz.com

Solution

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See also

OIM Problems and Solutions