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Topic: Another compex geometry problem
Replies: 4   Last Post: Jan 29, 2011 8:25 AM

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 Sujeet Kumar Posts: 190 From: Patna Registered: 10/21/10
Re: Another compex geometry problem
Posted: Jan 29, 2011 8:25 AM

> On Jan 26, 7:32 pm, Sujeet Kumar
> <sujeetkumar...@gmail.com> wrote:

> > > On Jan 12, 6:35 pm, Sujeet Kumar
> > > <sujeetkumar...@gmail.com> wrote:

> > > > Here is another complex geometry problem-
> > > > Q.In a regular planar n-gon , 7 diagonals are

> > > concurrent at a point Q.Find least possible value
> of
> > > n.It is given that Q is not the center of the
> > > polygon.

> >
> > > > **Be wise, generalise.**
> >
> > > By a diagonal is meant a straight line joining
> > > n=10.

> >
> > > One vertex Q, chosen as point of concurrency, is
> > > joined to remaining
> > > 7 non-adjacent vertices of a regular decagon ( n

> =
> > > 10) forming 10 -3 =
> > > 7 diagonals.

> >
> > > Narasimham
> >
> > I am not getting your solution.Send a diagram.Any n

> which is multiple of 30 will have this property.So
> least value

> > will be 30.
> >                                  Regards from

> Sujeet
>
> May be a trivial or extreme solution. If a
> all 5 radial lines as diagonals concurring at center
> of n =10 decagon
> and then if center is dragged to any vertex, a
> diagram of 7 diagonals
> would form as in:
>
> http://i51.tinypic.com/2ibnapv.jpg
>
> Regards,
> Narasimham

Q was supposed to be in the interior of polygon

Date Subject Author
1/12/11 Sujeet Kumar
1/22/11 narasimham
1/26/11 Sujeet Kumar
1/28/11 narasimham
1/29/11 Sujeet Kumar