Hyacinthos at Yahoo! Groups

Re: Sharygin lemma?

yakub.aliyev — Tue, 10 Nov 2009 10:49:18 GMT

Dear Nikos, use this link: http://www.qafqaz.edu.az/journal/20092516nev.pdf See Lemma 2.1. Best regards, Yakub.

Re: Sharygin lemma?

Nikolaos Dergiades — Tue, 10 Nov 2009 08:12:29 GMT

Dear Yakub, thank you. But I have not access to this site. Best regards Nikos Dergiades ... ___________________________________________________________

Re: Sharygin lemma?

yakub.aliyev — Tue, 10 Nov 2009 05:35:54 GMT

Dear Nikos Dergiades, yes I have a pure geometric proof which is similar to the solution of the problem in the problems section of journal Math. in School

Re: Sharygin lemma?

Nikolaos Dergiades — Mon, 09 Nov 2009 20:31:08 GMT

Dear Yakub, Do you have a simple proof for this problem? (I have an algebraic proof not simple, and no other information) Best regards Nikos Dergiades ...

Re: A new point on Euler line?

pldx1 — Sat, 07 Nov 2009 17:53:43 GMT

Dear Yakub, 1 --> when using P= p:q:r instead of barycentrics of H, everything turns easier (and a generalization --using a nine-points conic-- is obtained as

Re: A new point on Euler line?

Francisco Javier — Sat, 07 Nov 2009 09:17:53 GMT

I also have sent my calculations, with Mathematica and my package baricentricas.nb I have included the proof of the relation GP:PH = (2-1/(cosA cosB cosC))/3

New file uploaded to Hyacinthos

Sat, 07 Nov 2009 09:10:18 GMT

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Hyacinthos group. File :

New file uploaded to Hyacinthos

Sat, 07 Nov 2009 08:32:46 GMT

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Hyacinthos group. File : /New point

Re: A new point on Euler line?

Michel — Sat, 07 Nov 2009 08:30:25 GMT

Dear Hyacinthos I send a file in french with conway notations expleting the mode of calculus The name of the file is "New point on Euler Line" Amically Michel

Ebooks

John Sharp — Fri, 06 Nov 2009 20:49:19 GMT

Re: A new point on Euler line?

Francisco Javier García Capitán — Fri, 06 Nov 2009 15:25:26 GMT

Of course barycentrics give proofs of theorem, although synthetic proofs are better for all of us. I this case it is convenient the use of computer algebra to

Re: A new point on Euler line?

yakub.aliyev — Fri, 06 Nov 2009 13:02:01 GMT

Dear friends Eric and Pierre, Please, inform me. 1. how you get this barycentric coordinates? 2. what do you think is it possible, using these coordinates, to

Book - Wilhelm Fuhrmann

deocleciomota — Thu, 05 Nov 2009 16:18:16 GMT

Dear Friends, I'm looking for the book Synthetische Beweise Planimetrischer S?tze ? Autor: Wilhelm Fuhrmann. I wish this book was sent to me, in pdf, via

Re: metric relation in triangle

Nikolaos Dergiades — Wed, 04 Nov 2009 17:27:50 GMT

Dear Catalin, ... Barry sent you the following: If t = tan(A/2) = ra/s then a = 2.R.sinA = 4.R.t/(1 + t^2) = 4.R.s.ra/(s^2 + ra^2) (1) bc = (abc)/a = 2.R.S/a

Brocard Emmerich

John Sharp — Wed, 04 Nov 2009 12:18:20 GMT

Jean Louis You may not be able to access the PDF from the internet archive You can get it from the open library http://openlibrary.org John S [Non-text