Hyacinthos : We discuss themes on Triangle Geometry

Hyacinthos · We discuss themes on Triangle Geometry

Group Information

Members: 606
Category: Geometry
Founded: Dec 22, 1999
Language: English

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Activity within 7 days:

22 New Messages - 2 New Files - New Questions

Description

We discuss themes on Triangle Geometry (Triangle Points / Lines / Circles, Conics, Cubics etc)

List Owner: Antreas P. Hatzipolakis (in Greece)

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List Owner's Other Group ANOPOLIS and Blogs:

Most Recent Messages

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Re: 7 circles theorem Dear Antreas, A drawing suggests not. An "easy" variation is an inversion in the Speiker radical circle. Best regards, Peter. ... From: Antreas To: Posted - Wed Sep 1, 2010 3:24 pm	Moses, Peter J. C. peter_mows Offline Send Email
Re: Poncelet type theorem for polygons with odd number of sides Dear Ivan and François! I found the proof. Consider projective map transforming the inconic to the circle and the concurrence point to its center. It is easy Posted - Wed Sep 1, 2010 10:42 am	Alexey Zaslavsky zasl@... Send Email
Re: 7 circles theorem Variation: Let ABC be a triangle and F1,F2,F3 the ex-Feuerbach points of the triangles HBC,HCA,HAB corrsponding to angles (HBC),(HCA),(HAB), resp. Let (K1) be Posted - Tue Aug 31, 2010 2:30 pm	Antreas xpolakis Offline Send Email
Re: Poncelet type theorem for polygons with odd number of sides Dear François, I do not consider triangles, I consider 2k+1 - gons with k > 1, so the smallest case is pentagon. In the case of a triangle, indeed the locus Posted - Tue Aug 31, 2010 6:23 am	unbreakable i_borsenco Offline Send Email
Re: Poncelet type theorem for polygons with odd number of sides Dear Francois! If we look at the configuration of a triangle ABC and its contact triangle A'B'C', then we know lines AA', BB', CC' are on the Gergonne point of Posted - Tue Aug 31, 2010 6:23 am	Alexey Zaslavsky zasl@... Send Email
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Message History

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2010	56	79	111	103	80	81	100	97	2
2009	70	137	105	220	182	121	139	154	86	87	52	68
2008	128	75	70	96	96	84	103	105	95	121	58	117
2007	124	133	182	133	53	45	39	88	100	179	126	87
2006	129	108	348	378	235	324	356	270	109	168	152	138
2005	72	42	62	83	66	51	100	57	83	119	75	181
2004	271	259	196	135	64	143	220	163	213	286	69	54
2003	222	165	225	234	136	103	84	315	343	440	246	147
2002	104	149	235	226	291	123	75	51	41	116	62	147
2001	180	58	181	68	188	224	149	371	327	237	216	148
2000	172	172	269	111	112	147	59	173	217	164	238	329
1999												44

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