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Geometry Theorems and Formulas

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

Home » Olympiad Section » Geometry » Geometry Theorems and Formulas

308 Topics • Page 6 of 7 • Previous 1, 2, 3, 4, 5, 6, 7 Next

Announcements			Author	Replies	Views	Last Post
		Kiran Kedlaya's Geometry Unbound	rrusczyk	8	7770	Fri Jan 02, 2009 6:49 am #H34N1

Topics		Author	Replies	Views	Last Post
	Symedians	marko avila	5	1888	Tue Jan 10, 2006 9:46 am mathmanman
	Complex numbers in a triangle	ashwath.rabindranath	1	1159	Sat Jan 07, 2006 1:12 am Sathej
	Pascal's Theorem	mecrazywong	11	5453	Wed Dec 28, 2005 1:42 am Ashegh
	Centr	michal294	1	1168	Wed Dec 28, 2005 1:39 am Ashegh
	Projective line	Number1	2	1500	Wed Dec 28, 2005 1:24 am Ashegh
	Affine transformations	richard	1	930	Tue Dec 27, 2005 11:55 am mathmanman
	Cot Theorem	osmantelli	4	1828	Wed Dec 21, 2005 12:24 am toumaf
	Polar and polar reciprocal	battousai	1	1068	Sun Dec 18, 2005 4:17 am darij grinberg
	Menelause and Ceva's	SirErnest	8	3733	Tue Dec 06, 2005 8:02 pm fleeting_guest
	Trig identities	Philip_Leszczynski	4	2092	Thu Nov 24, 2005 2:18 pm Virgil Nicula
	Collinearity ...	ashwath.rabindranath	4	1741	Fri Nov 11, 2005 8:23 pm ashwath.rabindranath
	Ceva theorem for chords. Alex collection-(Internet)	flip2004	1	1207	Wed Nov 09, 2005 11:23 pm grobber
	Diagonals in a regular dodecagon Alex collection-(Internet)	flip2004	1	1123	Wed Nov 09, 2005 9:49 pm e.lopes
	Medians triangle and duality helpful in proving some inequalities for medians	darij grinberg	1	1764	Tue Nov 08, 2005 10:33 am jpe
	Circumcentre	shobber	5	2095	Sun Nov 06, 2005 7:56 am Ashegh
	formula of a bissector	Labiliau	5	2438	Fri Nov 04, 2005 4:14 pm Virgil Nicula
	Dehn invariant my friend	Makaveli	4	1572	Fri Oct 21, 2005 2:38 am darij grinberg
	Fuhrmann triangle	Naser_S	2	1408	Sun Oct 16, 2005 8:38 am Fermat -Euler
	Poncelet Porism	Leonardo	3	1556	Sat Oct 08, 2005 9:48 am Arne
	the geometric ruler of the position false	hucht	0	739	Tue Oct 04, 2005 10:30 am hucht
	Projectivity	Number1	1	984	Sun Oct 02, 2005 9:36 pm grobber
	Polar	mecrazywong	17	3556	Sun Sep 11, 2005 6:31 am Ashegh
	Identity [bc + ca + ab = s^2 + 4Rr + r^2 in triangle] a friend	Leonardo	5	2230	Sat Aug 13, 2005 7:58 pm Virgil Nicula
	Transversal Theorem (a criterion for collinear points) "Well-known", mentioned by Valentin during a chat	darij grinberg	7	4332	Mon Aug 01, 2005 4:40 pm darij grinberg
	Carnot Theorem [sum of distances from circumcenter to sides]	Labiliau	2	1470	Wed Jul 27, 2005 3:10 am shobber
	pentagon	behzad	1	1000	Tue Jul 26, 2005 7:23 am darij grinberg
	Coordinates [use of barycentric and trilinear coordinates] not a problem but a question	Soarer	10	3697	Sat Jul 09, 2005 11:23 am fleeting_guest
	Stewart's Theorem	Silverfalcon	14	4683	Sat Jul 09, 2005 12:42 am Virgil Nicula
	Bisector & incenter	Arne	8	5463	Sat Jul 09, 2005 12:31 am Cezar Lupu
	Determining whether a transformation is projective or not?	Bojan Basic	7	2061	Mon Jun 20, 2005 11:15 am fleeting_guest
	Centres	shobber	1	1000	Mon Jun 13, 2005 1:47 pm fleeting_guest
	Old theorem	juancarlos	1	1064	Tue May 31, 2005 3:54 pm fleeting_guest
	Area	shobber	6	1920	Wed May 25, 2005 12:41 am Valentin Vornicu
	Midperpendiculars	RedLizard	0	747	Sat May 21, 2005 7:00 am RedLizard
	homothetic squares	marko avila	1	1093	Thu May 05, 2005 6:20 pm pleurestique
	Pappus theorem, a. k. a. Pappos theorem http://cut-the-knot.com/pythagoras/Pappus.shtml	Moubinool	4	2148	Wed Apr 27, 2005 4:36 am shobber
	Petersen-Schoute Theorem	zabelman	0	994	Wed Apr 06, 2005 8:40 pm zabelman
	Poncelet´s Theorem	chavez	3	1508	Sun Apr 03, 2005 11:10 am Armo
	General form for CEVA	colin	1	1441	Mon Mar 21, 2005 7:22 pm Mildorf
	Pyhtagoras visits the nth dimension	towbomb	6	2370	Sun Mar 20, 2005 8:49 pm adidasty
	Caysey's Theorem.	hardsoul	1	1264	Thu Feb 24, 2005 5:02 am jpsteenstra
	Cyclic quadrilateral, poles and polars	Arne	1	1574	Tue Feb 22, 2005 3:36 pm fleeting_guest
	Relations concerning Fermat points Triangle geometry	Leon	3	2107	Wed Feb 09, 2005 2:36 pm darij grinberg
	Hexagons and theorems	Armo	1	1245	Fri Feb 04, 2005 11:27 am Megus
	Orthocenter Relationships http://mathworld.wolfram.com/Orthocenter.html	philips_89	4	3557	Mon Jan 31, 2005 1:21 pm Leon
	morley's theorem morley's trisector theorem	Ulysses	2	1718	Mon Dec 27, 2004 10:45 am darij grinberg
	Newton's theorem Gauss line of circumscribed quadrilateral passes through incenter	nttu	4	2617	Thu Dec 16, 2004 9:28 am grobber
	Descartes' Circle Theorem	towbomb	1	2150	Sun Nov 07, 2004 8:40 pm grobber
	Again about Feuerbach	prowler	2	1635	Sat Oct 16, 2004 8:53 am darij grinberg
	Weird Geometry Theorem [Miquel's theorems chain]	billzhao	4	2800	Sun Jul 25, 2004 2:17 pm darij grinberg
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308 Topics • Page 6 of 7 • Previous 1, 2, 3, 4, 5, 6, 7 Next

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