Art of Problem Solving Forum

Want to learn how to tackle those tough MATHCOUNTS and AMC counting and probability problems? Check out Art of Problem Solving's Introduction to Counting & Probability by David Patrick.

The time now is Sat Nov 21, 2009 6:31 am
All times are UTC - 8

View posts since last visit
View unanswered posts

Geometry Solved Problems

Moderators: High School Olympiad Moderators, darij grinberg, N.T.TUAN, orl, pbornsztein, pohoatza, yetti

Home » Olympiad Section » Geometry » Geometry Solved Problems

1414 Topics • Page 1 of 29 • 1, 2, 3, ..., 27, 28, 29 Next

Topics		Author	Replies	Views	Last Post
	let ABC [centroid of equilateral triangle ==> ED = EF]	tranthanhnam	9	3412	Thu Nov 19, 2009 10:22 am sunken rock
	Cyclic points USAMO 1990	MithsApprentice	4	1162	Fri Oct 23, 2009 4:41 am dgreenb801
	Hexagon INMO 2002 Problem 1	Rushil	5	1607	Fri Oct 02, 2009 8:20 am Rijul saini
	concyclic points in a triangle BW 95	Maverick	8	1876	Sun Aug 23, 2009 11:28 am dgreenb801
	Circle center O passes through the vertices A and C IMO 1985, Day 2, Problem 5	orl	13	6005	Thu Aug 20, 2009 11:25 pm simon89889
	Be = bf CWMO 2005-2	zhaoli	6	1696	Thu Aug 13, 2009 5:04 am CCMath1
	upgrade of problem 7 for grade 8-9, 239MO 2004 239MO 2004, grade 10-11, problem 8	orl	6	1293	Tue Aug 11, 2009 5:09 pm Heebeen, Yang
	independent of the position of D 3rd JBMO 1999	Iris Aliaj	5	1786	Mon Aug 10, 2009 8:58 pm plane geometry
	ABC [inequality PA / BC^2 + PB / CA^2 + PC / AB^2 >= 1 / R] USA IMO team selection test 2000, by Titu Andreescu; also: Brazil IMO training	hxtung	8	4073	Sun Aug 09, 2009 10:44 am Agr_94_Math
	the centers of the excircles of a triangle ABC Russian Olympiad 2004, problem 11.2	orl	7	3861	Thu Aug 06, 2009 7:52 pm ArbelosYS
	excircles touch corresponding sides of triangle ABC ARO 2005 - problem 11.3	orl	4	2610	Wed Aug 05, 2009 11:09 pm plane geometry
	Less than or equal to 30° IMO 1991, Day 2, Problem 4, IMO ShortList 1991, Problem 24 (FRA 2)	orl	4	2636	Sun Jul 12, 2009 2:39 pm Zhero
	Trig condition for cyclic ABCD IMO Shortlist 1997, Q23, British training sheet	Fiachra	8	2580	Sun Jun 28, 2009 8:40 pm varunrocks
	Hard to approach it ! Swiss Imo Selection 2006	BogG	14	4349	Sat Jun 27, 2009 11:14 am FelixD
	Russian geometry	iandrei	6	1718	Fri Jun 26, 2009 8:26 am snowingforest
	IMO96/2 [the lines AP, BD, CE meet at a point] IMO 1996 problem 2, IMO Shortlist 1996, G2	Arne	10	5549	Thu Jun 25, 2009 11:22 pm trigg
	Geo quest. [excenters in a parallelogram; < KCL fixed] IMOTC ST1 Q1; IMO shortlist 2005 problem G3	madatmath	5	2898	Mon Jun 22, 2009 6:38 am FelixD
	parallellogram	Arne	5	1417	Tue Jun 16, 2009 7:02 am dgreenb801
	Paracevian perspector Eric Danneels, Hyacinthos message #10135	darij grinberg	5	1188	Sat Jun 13, 2009 7:46 am vittasko
	Difficult Geometry Beautiful Geometry Theorem	Hoy	3	1356	Sat Jun 13, 2009 5:54 am jayme
	Never been solved [ Goto page: 1, 2 ]	gopherhole112	35	5737	Thu Jun 11, 2009 3:42 pm armpist
	concurent?? [Steinbart Theorem in one direction] Logo for MathPro Press, by S. Rabinowitz; also Math. Mag. 1992 p. 59	alekk	10	2897	Tue Jun 09, 2009 4:48 am jayme
	Uganda 1975 [when A-median, B-symmedian, C-altitude concur] Idi Amin's Personal collection and Lemoine	pestich	5	1295	Sun Jun 07, 2009 3:54 pm luisgeometria
	collinear	mr redrum	3	1098	Fri Jun 05, 2009 2:59 am jayme
	Three circles. IMO Shortlist 1992, Problem 7	prowler	8	3046	Sun May 31, 2009 12:42 am sunken rock
	An Inversion Problem ...	vinoth_90_2004	2	1470	Mon May 18, 2009 11:58 am bodan
	Ratio and fixed points	jarod	3	1508	Fri May 08, 2009 4:53 pm Tiger100
	2 circles	grobber	7	1830	Fri May 08, 2009 5:39 am jayme
	Straight line 41-st Vietnamese Mathematical Olympiad 2003	uTOPi_a	9	2523	Wed Apr 22, 2009 4:17 am mathVNpro
	Collinearity	dondigo	4	1456	Wed Apr 22, 2009 3:35 am mathVNpro
	incircle with center I of triangle ABC touches the side BC Vietnam TST 2003 for the 44th IMO, problem 2	orl	11	3458	Mon Apr 20, 2009 8:57 pm mathVNpro
	An IOH smart and interesting problem	manlio	4	1901	Fri Apr 17, 2009 10:17 am luisgeometria
	i find it difficult [Euler line of intouch triangle] Iran 1995; Hungary-Israel Competition 2000; 97th Kürschák Competition 1997 [ Goto page: 1, 2 ]	galois	22	10667	Thu Apr 16, 2009 8:41 am luisgeometria
	Circles unknown	al.M.V.	7	2224	Thu Apr 16, 2009 5:44 am jayme
	Hard geometry problem	Stun	6	2558	Sun Apr 12, 2009 5:36 am armpist
	Geometric inequality From some national olymp	erbed	6	2293	Thu Mar 12, 2009 12:34 pm darij grinberg
	A well known one Indian IMOTC 2005 Day 2 Problem 1	Rushil	4	1630	Tue Feb 17, 2009 10:55 am luisgeometria
	China TST 2004 concurrent sides China Team Selection Test 2004, Day 2, Problem 1	orl	14	3156	Sun Feb 01, 2009 9:11 am shobber
	Darij is going to solve Feng's Geometry Problem - Pwn it! USAMO 2006, Problem 6, proposed by Zuming Feng	orl	14	4857	Thu Jan 22, 2009 4:49 am windrock
	balkan geo 2003 Balkan MO 2003, problem 2 [ Goto page: 1, 2 ]	Valentin Vornicu	22	6318	Sat Jan 10, 2009 8:35 pm Agr_94_Math
	Collinear IberoAmerican Mathematical Olympiad 2004, Problem 5	Pascual2005	6	3677	Thu Jan 01, 2009 2:34 pm vittasko
	perpendicular feet	barasawala	7	2935	Thu Dec 25, 2008 5:24 am jayme
	Circumcenters pass through common point 2003 USA TST	cauchyguy	4	4176	Mon Nov 24, 2008 4:49 pm The QuattoMaster 6000
	The maximal value of the inradius of a an inscribed triangle Bulgarian TST's 2004 --- Problem 3.	vess	6	4975	Sat Oct 18, 2008 9:26 am Marian Dinca
	geO 98 [convex hexagon ABCDEF with B + D + F = 360°] IMO Shortlist 1998 Geometry 6	Maverick	9	5452	Wed Oct 08, 2008 3:32 am felixx
	Thailand TST	wttsk	15	5064	Mon Sep 29, 2008 4:30 am jayme
	quadrilateral ABCD without parallel sides is circumscribed ARO 2005 - problem 11.7	orl	5	8106	Fri Sep 12, 2008 5:58 pm April
	circle with tangent lines IMO Shortlist 1994, G5	chaogold	5	3189	Tue Aug 12, 2008 1:13 pm orl
	Shortlist 2000 IMO Shortlist 2000, Problem G1	grobber	2	2699	Sun Jul 06, 2008 3:28 am mstoenescu
	I am finding another solution! new ideas!! 1997 APMO	carlosbr	2	2337	Sat Jul 05, 2008 10:12 pm Johan Gunardi
Display topics from previous: Sort by:

1414 Topics • Page 1 of 29 • 1, 2, 3, ..., 27, 28, 29 Next

Home » Olympiad Section » Geometry » Geometry Solved Problems

Jump to:

Who is Online
	Users browsing this forum: 0 Registered, 0 Hidden and 1 Guest Registered Users: None
	Legend: [ Administrator ][ Moderator ][ User ][ Bot ]

	New posts			Announcement
	No new posts			Sticky
	Popular			Event
	Locked			Moved
	You have posted in this topic

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
You cannot post calendar events in this forum