Geometrie

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Last post by Filip Chindea « Wed Mar 26, 2008 11:18 pm

by Filip Chindea » Wed Mar 26, 2008 11:18 pm

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Last post by Filip Chindea
Wed Mar 26, 2008 11:18 pm

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Inegalitate de unghiuri

Last post by Filip Chindea « Sun Jul 13, 2008 8:28 pm

by Filip Chindea » Sun Jul 13, 2008 8:28 pm

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577 Views

Last post by Filip Chindea
Sun Jul 13, 2008 8:28 pm
Patrulater si suma ariilor

Last post by Filip Chindea « Sun Jul 13, 2008 8:24 pm

by Filip Chindea » Sun Jul 13, 2008 8:24 pm

0 Replies

665 Views

Last post by Filip Chindea
Sun Jul 13, 2008 8:24 pm
Triunghi si arie constanta

Last post by Filip Chindea « Sun Jul 13, 2008 8:19 pm

by Filip Chindea » Sun Jul 13, 2008 8:19 pm

0 Replies

557 Views

Last post by Filip Chindea
Sun Jul 13, 2008 8:19 pm
Bisectoare si patrulater inscriptibil

Last post by Filip Chindea « Sun Jul 13, 2008 8:16 pm

by Filip Chindea » Sun Jul 13, 2008 8:16 pm

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601 Views

Last post by Filip Chindea
Sun Jul 13, 2008 8:16 pm
Trapez si unghiuri congruente

Last post by Filip Chindea « Sun Jul 13, 2008 8:13 pm

by Filip Chindea » Sun Jul 13, 2008 8:13 pm

0 Replies

618 Views

Last post by Filip Chindea
Sun Jul 13, 2008 8:13 pm
Diferenta de unghiuri constanta

Last post by Filip Chindea « Sun Jul 13, 2008 8:11 pm

by Filip Chindea » Sun Jul 13, 2008 8:11 pm

0 Replies

568 Views

Last post by Filip Chindea
Sun Jul 13, 2008 8:11 pm
Cerc si arii egale

Last post by Filip Chindea « Sun Jul 13, 2008 8:07 pm

by Filip Chindea » Sun Jul 13, 2008 8:07 pm

0 Replies

594 Views

Last post by Filip Chindea
Sun Jul 13, 2008 8:07 pm
Tangente si unghi drept exterior

Last post by maky « Sat Jul 12, 2008 10:29 pm
Replies: 1
by Filip Chindea » Sat Jul 12, 2008 9:18 pm

1 Replies

1000 Views

Last post by maky
Sat Jul 12, 2008 10:29 pm
Geometria triunghiului - coliniaritate

Last post by Filip Chindea « Sat Jul 12, 2008 9:50 pm

by Filip Chindea » Sat Jul 12, 2008 9:50 pm

0 Replies

754 Views

Last post by Filip Chindea
Sat Jul 12, 2008 9:50 pm
Patrulater

Last post by Marius Mainea « Thu Jul 10, 2008 8:40 pm
Replies: 1
by Vlad Matei » Tue Jan 22, 2008 7:00 pm

1 Replies

983 Views

Last post by Marius Mainea
Thu Jul 10, 2008 8:40 pm
O problema dintr-o culegere...

Last post by Cosmin Pohoata « Wed Jun 25, 2008 3:41 am
Replies: 1
by mihai miculita » Tue Jun 24, 2008 7:31 am

1 Replies

732 Views

Last post by Cosmin Pohoata
Wed Jun 25, 2008 3:41 am
Relatie cu arii intr-un pentagon convex

Last post by Filip Chindea « Thu Jun 19, 2008 7:41 pm
Replies: 3
by mihai++ » Wed Jun 18, 2008 1:08 pm

3 Replies

1067 Views

Last post by Filip Chindea
Thu Jun 19, 2008 7:41 pm
Perpendicularitate

Last post by Beniamin Bogosel « Wed Jun 18, 2008 6:16 pm

by Beniamin Bogosel » Wed Jun 18, 2008 6:16 pm

0 Replies

484 Views

Last post by Beniamin Bogosel
Wed Jun 18, 2008 6:16 pm
Descompunere in patrulatere concave

Last post by mihai++ « Wed Jun 18, 2008 1:10 pm
Replies: 1
by Beniamin Bogosel » Mon Jun 16, 2008 1:11 pm

1 Replies

667 Views

Last post by mihai++
Wed Jun 18, 2008 1:10 pm
Cercuri tangente la cercul inscris

Last post by Filip Chindea « Sat Jun 14, 2008 8:28 pm
Replies: 1
by Filip Chindea » Fri Jun 13, 2008 9:28 pm

1 Replies

841 Views

Last post by Filip Chindea
Sat Jun 14, 2008 8:28 pm
Proprietate a patrulaterului complet

Last post by Filip Chindea « Sat Jun 14, 2008 8:26 pm
Replies: 1
by Filip Chindea » Fri Jun 13, 2008 9:09 pm

1 Replies

1033 Views

Last post by Filip Chindea
Sat Jun 14, 2008 8:26 pm
Axe de simetrie

Last post by Beniamin Bogosel « Fri Jun 13, 2008 4:10 pm
Replies: 1
by Beniamin Bogosel » Wed May 21, 2008 6:02 pm

1 Replies

724 Views

Last post by Beniamin Bogosel
Fri Jun 13, 2008 4:10 pm
Sfere

Last post by Beniamin Bogosel « Fri Jun 13, 2008 4:02 pm

by Beniamin Bogosel » Fri Jun 13, 2008 4:02 pm

0 Replies

448 Views

Last post by Beniamin Bogosel
Fri Jun 13, 2008 4:02 pm
Distante in pentagon

Last post by Filip Chindea « Wed Jun 11, 2008 9:08 pm
Replies: 1
by Filip Chindea » Sat Jun 07, 2008 8:05 pm

1 Replies

860 Views

Last post by Filip Chindea
Wed Jun 11, 2008 9:08 pm
Alte doua probleme din Kvant nr. 5/2007

Last post by Marius Mainea « Mon Jun 09, 2008 9:49 pm
Replies: 2
by mihai miculita » Sun Jun 08, 2008 1:44 pm

2 Replies

811 Views

Last post by Marius Mainea
Mon Jun 09, 2008 9:49 pm
Concurenta non-standard

Last post by Cosmin Pohoata « Sun Jun 08, 2008 2:47 pm
Replies: 4
by Filip Chindea » Sat Jun 07, 2008 8:20 pm

4 Replies

1589 Views

Last post by Cosmin Pohoata
Sun Jun 08, 2008 2:47 pm
Angle chasing si cercuri tangente

Last post by mumble « Sun Jun 08, 2008 11:19 am
Replies: 3
by Filip Chindea » Sat Jun 07, 2008 8:15 pm

3 Replies

1296 Views

Last post by mumble
Sun Jun 08, 2008 11:19 am
Patrat unitate

Last post by Beniamin Bogosel « Sat Jun 07, 2008 2:01 pm

by Beniamin Bogosel » Sat Jun 07, 2008 2:01 pm

0 Replies

504 Views

Last post by Beniamin Bogosel
Sat Jun 07, 2008 2:01 pm
Problemele de g din Kvant nr.1 si 2/2008

Last post by Beniamin Bogosel « Sat Jun 07, 2008 1:38 pm
Replies: 1
by mihai miculita » Sat Jun 07, 2008 11:56 am

1 Replies

634 Views

Last post by Beniamin Bogosel
Sat Jun 07, 2008 1:38 pm
Bisectoare intr-un triunghi, inaltimi in altul

Last post by turcas « Mon Jun 02, 2008 7:14 pm
Replies: 3
by turcas » Mon Jun 02, 2008 7:05 pm

3 Replies

965 Views

Last post by turcas
Mon Jun 02, 2008 7:14 pm
Puncte simetrice fata de mijloc

Last post by Filip Chindea « Mon Jun 02, 2008 7:05 pm
Replies: 1
by Beniamin Bogosel » Mon Jun 02, 2008 5:29 pm

1 Replies

710 Views

Last post by Filip Chindea
Mon Jun 02, 2008 7:05 pm
Im(PA+PB+PC+PD), cu ABCD dreptunghi - Traian Lalescu pb 4

Last post by maky « Sun Jun 01, 2008 2:07 pm
Replies: 2
by maky » Sat May 31, 2008 8:21 pm

2 Replies

1614 Views

Last post by maky
Sun Jun 01, 2008 2:07 pm
IMO 2005 problema 1

Last post by Beniamin Bogosel « Mon May 26, 2008 1:12 pm
Replies: 1
by Beniamin Bogosel » Wed May 21, 2008 4:25 pm

1 Replies

642 Views

Last post by Beniamin Bogosel
Mon May 26, 2008 1:12 pm
Proiectii pe plane...

Last post by Beniamin Bogosel « Mon May 26, 2008 12:11 pm
Replies: 2
by Beniamin Bogosel » Sun May 25, 2008 10:39 pm

2 Replies

715 Views

Last post by Beniamin Bogosel
Mon May 26, 2008 12:11 pm
Baraj seniori 2007

Last post by Beniamin Bogosel « Sat May 24, 2008 10:35 pm
Replies: 2
by Beniamin Bogosel » Sat May 24, 2008 3:03 pm

2 Replies

653 Views

Last post by Beniamin Bogosel
Sat May 24, 2008 10:35 pm
Poligon cu 2n laturi

Last post by Beniamin Bogosel « Sat May 24, 2008 3:04 pm

by Beniamin Bogosel » Sat May 24, 2008 3:04 pm

0 Replies

436 Views

Last post by Beniamin Bogosel
Sat May 24, 2008 3:04 pm
Problema Bulgaria 1998

Last post by Beniamin Bogosel « Thu May 22, 2008 9:39 pm

by Beniamin Bogosel » Thu May 22, 2008 9:39 pm

0 Replies

424 Views

Last post by Beniamin Bogosel
Thu May 22, 2008 9:39 pm
O caracterizare alternativa a punctului Lemoine

Last post by Beniamin Bogosel « Thu May 22, 2008 5:52 pm
Replies: 1
by pohoatza » Fri Sep 28, 2007 6:27 pm

1 Replies

747 Views

Last post by Beniamin Bogosel
Thu May 22, 2008 5:52 pm
Tot axe de simetrie

Last post by Beniamin Bogosel « Wed May 21, 2008 6:05 pm

by Beniamin Bogosel » Wed May 21, 2008 6:05 pm

0 Replies

372 Views

Last post by Beniamin Bogosel
Wed May 21, 2008 6:05 pm
Poligon regulat si altul inscriptibil

Last post by Beniamin Bogosel « Wed May 21, 2008 5:31 pm

by Beniamin Bogosel » Wed May 21, 2008 5:31 pm

0 Replies

392 Views

Last post by Beniamin Bogosel
Wed May 21, 2008 5:31 pm
Poligon regulat

Last post by Beniamin Bogosel « Wed May 21, 2008 5:25 pm

by Beniamin Bogosel » Wed May 21, 2008 5:25 pm

0 Replies

382 Views

Last post by Beniamin Bogosel
Wed May 21, 2008 5:25 pm
Concurenta

Last post by DragosD « Wed May 21, 2008 11:07 am
Replies: 1
by Beniamin Bogosel » Mon May 19, 2008 9:52 pm

1 Replies

536 Views

Last post by DragosD
Wed May 21, 2008 11:07 am
Dreapta lui Euler paralela cu bisectoarea (probabil clasica)

Last post by Cosmin Pohoata « Tue May 20, 2008 1:11 am
Replies: 1
by Filip Chindea » Mon May 19, 2008 9:43 pm

1 Replies

668 Views

Last post by Cosmin Pohoata
Tue May 20, 2008 1:11 am
BMO 2008 Problema 1

Last post by mumble « Sun May 18, 2008 4:42 pm
Replies: 6
by Beniamin Bogosel » Wed May 07, 2008 7:57 pm

6 Replies

2157 Views

Last post by mumble
Sun May 18, 2008 4:42 pm
Patrulater circumscriptibil, PE=EQ - ol. poloneza

Last post by Filip Chindea « Thu May 15, 2008 10:31 pm
Replies: 1
by maky » Thu May 15, 2008 1:30 am

1 Replies

770 Views

Last post by Filip Chindea
Thu May 15, 2008 10:31 pm
Constructie pornind cu mijlocul unei tangente la cerc

Last post by maky « Thu May 15, 2008 1:42 am

by maky » Thu May 15, 2008 1:42 am

0 Replies

590 Views

Last post by maky
Thu May 15, 2008 1:42 am
Doua cercuri si patru puncte conciclice

Last post by Beniamin Bogosel « Wed May 14, 2008 9:18 pm
Replies: 3
by Vlad Matei » Tue Jan 22, 2008 7:07 pm

3 Replies

1146 Views

Last post by Beniamin Bogosel
Wed May 14, 2008 9:18 pm
Clasica - trei cercuri tangente

Last post by maky « Mon May 12, 2008 1:13 am
Replies: 1
by Filip Chindea » Sun May 11, 2008 9:44 pm

1 Replies

782 Views

Last post by maky
Mon May 12, 2008 1:13 am
Problema Fluturelui...

Last post by Beniamin Bogosel « Fri May 09, 2008 10:18 am
Replies: 3
by Beniamin Bogosel » Thu May 08, 2008 2:27 pm

3 Replies

785 Views

Last post by Beniamin Bogosel
Fri May 09, 2008 10:18 am
Alta varianta a problemei fluturelui... (Kvant)

Last post by Filip Chindea « Thu May 08, 2008 10:20 pm
Replies: 1
by Beniamin Bogosel » Thu May 08, 2008 2:49 pm

1 Replies

465 Views

Last post by Filip Chindea
Thu May 08, 2008 10:20 pm
Cercuri inscrise

Last post by Beniamin Bogosel « Thu May 08, 2008 4:47 pm
Replies: 1
by mihai++ » Mon Mar 31, 2008 2:00 pm

1 Replies

709 Views

Last post by Beniamin Bogosel
Thu May 08, 2008 4:47 pm
Geometrie China

Last post by maky « Thu May 08, 2008 4:14 pm
Replies: 1
by mumble » Thu Apr 17, 2008 3:43 pm

1 Replies

824 Views

Last post by maky
Thu May 08, 2008 4:14 pm
Romanian TST I 2008, Problema 3

Last post by Beniamin Bogosel « Fri May 02, 2008 12:06 pm
Replies: 1
by Laurian Filip » Fri May 02, 2008 11:52 am

1 Replies

722 Views

Last post by Beniamin Bogosel
Fri May 02, 2008 12:06 pm
Inegalitate geometrica (clasica)

Last post by Bogdan Cebere « Wed Apr 02, 2008 8:23 pm
Replies: 1
by Mihnea Andrei » Wed Apr 02, 2008 8:04 pm

1 Replies

560 Views

Last post by Bogdan Cebere
Wed Apr 02, 2008 8:23 pm
Problema 1256 din rev.“Mathematical Magazine”

Last post by mihai miculita « Wed Apr 02, 2008 7:32 pm
Replies: 4
by mihai miculita » Sat Mar 29, 2008 8:36 am

4 Replies

1196 Views

Last post by mihai miculita
Wed Apr 02, 2008 7:32 pm

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