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Géométrie

ἀγεωμέτρητος μηδεὶς εἰσίτω  
Subject Posts Last Post

Trois céviennes concourantes (encore !) (820 views) Attachments

by jelobreuil
21 11/10/2021 05:39PM
Last Post by pappus

Centre du cercle inscrit et droite d'Euler (12007 views)   (Pages: 1 2)

by Gilles
58 11/10/2021 02:45PM
Last Post by Ludwig

des points alignés quatre par quatre (68 views) Attachments

by jelobreuil
3 11/10/2021 01:21PM
Last Post by jelobreuil

Un concours particulier (125 views) Attachments

by jelobreuil
4 11/09/2021 10:01PM
Last Post by jelobreuil

Pseudo-droites de Simson (77 views)

by mathisse
4 11/09/2021 02:59PM
Last Post by mathisse

Un problème de Chasles sur les coniques (82 views)

by etanche
2 11/09/2021 10:21AM
Last Post by Bouzar

Un problème à l'ancienne de Mathieu Stewart (209 views)

by Jean-Louis Ayme
6 11/09/2021 08:55AM
Last Post by Chaurien

Demande exos : coniques (680 views)

by Homo Topi
21 11/08/2021 09:27PM
Last Post by etanche

Géométries, etc. (98 views)

by soland
2 11/08/2021 06:22PM
Last Post by soland

Terminologie : "cleavers and splitters" (200 views)

by yan2
10 11/08/2021 05:59PM
Last Post by pldx1

Une relation avec les deux points de Fermat (223 views)

by Bouzar
10 11/08/2021 05:35PM
Last Post by Bouzar

Trois centres alignés (334 views) Attachments

by jelobreuil
13 11/07/2021 11:37PM
Last Post by jelobreuil

Symétrie centrale démonstrations (221 views)

by Stanislas75
11 11/07/2021 04:02PM
Last Post by Dom

Un lieu relatif à un quadrilatère (178 views)

by Jean-Louis Ayme
5 11/05/2021 05:57PM
Last Post by pldx1

Un curieux résultat (1514 views)

by Jean-Louis Ayme
27 11/03/2021 10:12AM
Last Post by Jean-Louis Ayme

Un problème italien (484 views)

by Bouzar
12 11/03/2021 10:06AM
Last Post by Jean-Louis Ayme

Un simple problème (189 views)

by Jean-Louis Ayme
3 11/02/2021 11:49AM
Last Post by pldx1

Une étude sur les cercles de Tucker (145 views)

by Jean-Louis Ayme
3 11/02/2021 11:25AM
Last Post by pldx1

Droite de Simson perpendiculaire (355 views)

by Bouzar
8 11/01/2021 08:46AM
Last Post by pldx1

Minimisation des sommes des écarts de pts 3D (263 views)

by Lancey
3 10/29/2021 12:15PM
Last Post by Lancey

Angles égaux (462 views) Attachments

by blackawn
15 10/29/2021 11:00AM
Last Post by pldx1

Le coin des olympiades n°3 (1036 views) Attachments

by Bouzar
14 10/28/2021 05:26PM
Last Post by pldx1

Parallélogramme et transversale (901 views)

by Piteux_gore
25 10/28/2021 02:39PM
Last Post by pappus

Intersection de deux ellipses (267 views)

by Yopery
5 10/28/2021 11:29AM
Last Post by Yopery

Un lieu géométrique, de Jules Verne ? (443 views)

by Chaurien
13 10/27/2021 11:23PM
Last Post by Chaurien

Bissectrice et coniques circonscrites (299 views) Attachments

by jelobreuil
11 10/27/2021 09:45PM
Last Post by jelobreuil

Balle, bracelets, bague (1289 views)

by P.
32 10/27/2021 03:20PM
Last Post by pappus

René Goormaghtigh et sa déroutante relation (258 views) Attachments

by Jean-Louis Ayme
6 10/27/2021 09:27AM
Last Post by pldx1

Question sur la revue "Forum Geometricorum" (84 views)

by etanche
1 10/27/2021 08:48AM
Last Post by etanche

Dimension et espaces projectifs (362 views)

by Sn
8 10/26/2021 10:36AM
Last Post by pldx1

Construction d'un point P sous une condition (500 views)

by Jean-Louis Ayme
14 10/26/2021 10:12AM
Last Post by pldx1

Une conjecture (977 views)

by Jean-Louis Ayme
14 10/26/2021 07:56AM
Last Post by Jean-Louis Ayme

Intersection de deux paraboles homofocales (214 views)

by Piteux_gore
4 10/25/2021 09:58PM
Last Post by Rescassol

Normale à l'ellipse (431 views)

by Piteux_gore
10 10/25/2021 01:55PM
Last Post by pappus

Distance d'un point à une droite (X 1880) (412 views)

by Piteux_gore
9 10/25/2021 09:18AM
Last Post by pldx1

Lieu dans l'espace (182 views)

by Piteux_gore
3 10/24/2021 01:17PM
Last Post by Piteux_gore

Construction d'un carré (234 views)

by Piteux_gore
5 10/23/2021 12:16PM
Last Post by soland

Le cercle de Taylor (92 views)

by Jean-Louis Ayme
1 10/23/2021 08:27AM
Last Post by Jean-Louis Ayme

Deux isogonales (394 views) Attachments

by Jean-Louis Ayme
10 10/23/2021 08:19AM
Last Post by Jean-Louis Ayme

Question sur exercice droites-sphère (161 views)

by Piteux_gore
3 10/21/2021 05:47PM
Last Post by gerard0

Triangles équilatéraux (1329 views) Attachments

by lorentz
28 10/21/2021 05:00PM
Last Post by pappus

La cyclocévienne (6056 views)

by pappus
18 10/21/2021 08:22AM
Last Post by Jean-Louis Ayme

Construction d'irrationnels (210 views)

by Piteux_gore
4 10/20/2021 05:26PM
Last Post by Neogramme

Égalité de triangles (270 views)

by charles H
5 10/20/2021 02:54PM
Last Post by poulbot

Un point limite ou de Poncelet (783 views) Attachments

by Jean-Louis Ayme
9 10/20/2021 10:42AM
Last Post by Jean-Louis Ayme

Un exercice issu d’une figure de collège (2325 views) Attachments

by Yannguyen
29 10/20/2021 10:37AM
Last Post by Jean-Louis Ayme

Prix de beauté (1406 views)

by Pouzergues
17 10/19/2021 01:12PM
Last Post by Jean-Louis Ayme

Variété lisse et compacte (307 views)

by evariste21
5 10/18/2021 11:37PM
Last Post by marco

Translation (exposition Borel) (147 views)

by marco
2 10/18/2021 09:49PM
Last Post by marco

Théorème de Reim (121 views)

by mathisse
1 10/18/2021 07:01PM
Last Post by mathisse

Grand oral X-1963 (6282 views)

by Blue\c/
18 10/18/2021 12:48PM
Last Post by pappus

En hommage à Leibniz (11563 views)   (Pages: 1 2 3)

by Pouzergues
94 10/18/2021 12:00PM
Last Post by Pouzergues

Tores de Hopf (24483 views)   (Pages: 1 2)

by Saturne
74 10/16/2021 07:04PM
Last Post by Saturne

Ensemble compliqué (339 views)

by paco
6 10/16/2021 02:17PM
Last Post by JLT

Le théorème de Ménélaüs appliqué au trapèze (528 views)

by djelloul sebaa
5 10/16/2021 01:40AM
Last Post by Tonm

Point de Fermat et droite d'Euler (472 views)

by Bouzar
6 10/13/2021 11:25AM
Last Post by Rescassol

Un axe radical passant par G (739 views) Attachments

by jelobreuil
12 10/12/2021 09:54PM
Last Post by jelobreuil

Découplage d'une équation de trigo (536 views)

by tcoq
10 10/12/2021 08:00PM
Last Post by gerard0

Le théorème de Thalès appliqué aux trapèzes (900 views)

by djelloul sebaa
9 10/11/2021 08:34PM
Last Post by djelloul sebaa

Une relation avec des aires (591 views)

by Bouzar
9 10/09/2021 06:13PM
Last Post by Chaurien

Géométrie projective pour agrégatifs (1518 views)

by pldx1
5 10/09/2021 02:29PM
Last Post by poulbot

Démonstration d'une égalité contenant nabla (284 views)

by DickVulcain
2 10/06/2021 06:02PM
Last Post by P.

Géométrie axiomatique et distance (693 views)

by malavita
11 10/06/2021 11:47AM
Last Post by malavita

Transformations de Möbius (29218 views)   (Pages: 1 ... 9 10 11)

by odile0502
434 10/06/2021 09:45AM
Last Post by pldx1

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