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Hyacinthos · We discuss themes on Triangle Geometry

Group Information

  • Members: 589
  • Category: Geometry
  • Founded: Dec 22, 1999
  • Language: English
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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 Blog ANOPOLIS.

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Re: Poristic triangles
Dear Nikos [ND] ... And in the french edition (in the 5th, that I have) is written R/2 - r APH
Posted - Thu Nov 12, 2009 11:44 pm
Antreas
xpolakis
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Re: Poristic triangles
Dear Bernard, I have not the reference you want but by the way of your question I have something to notice that perhaps you just know. Since the NPC is tangent
Posted - Thu Nov 12, 2009 10:16 pm
Nikolaos Dergiades
ndergiades
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Re: Poristic triangles
... From: alexey_zaslavsky <alexey_zaslavsky@...> Date: Thu, Nov 12, 2009 at 5:08 PM Subject: Re: Poristic triangles To: Hyacinthos-owner@yahoogroups.com
Posted - Thu Nov 12, 2009 7:53 pm
Antreas
xpolakis
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Re: Poristic triangles
Dear Bernard [BG] ... Prove that the Simson LInes of triangles with the same incircles and circumcircles for a fixed point on the circumference are concurrent.
Posted - Thu Nov 12, 2009 7:52 pm
Antreas
xpolakis
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Poristic triangles
Dear friends, on the internet one can find several assertions concerning poristic triangles but I didn't manage to find any references. Can someone help ? 1.
Posted - Thu Nov 12, 2009 11:09 am
Bernard Gibert
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Message History

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2009 70 137 105 220 182 121 139 154 86 87 38
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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