Chronology of Updates

Note: I have placed chronology of updates for 1996, 1997, 1998, 1999, 2000, 2001, 2002 and 2003 into separate files. Starting with 1997, the most recent entries appear topmost. Besides providing an insight of this site's evolution, chronology updates may be used for word searches.

December 26, 2004 Droz-Farny Circles
December 25, 2004 Perpendicular Bisectors in an Inscriptible Quadrilateral II
December 24, 2004 Angle Bisectors and Perpendiculars in a Quadrilateral
December 23, 2004 Perpendicular Bisectors in an Inscriptible Quadrilateral
December 21, 2004 Droz-Farny Line Theorem
December 19, 2004 Reflections of a Point on the Circumcircle
December 18, 2004 Reflections of a Line Through the Orthocenter
December 16, 2004 Reflections of the Orthocenter
December 12, 2004 Intersecting Chords Theorem
December 10, 2004 Tangent and Secant
December 9, 2004 Isogonal and Isotomic Conjugalities
December 8, 2004 Squares Inscribed In a Triangle III
December 7, 2004 Square Inscribed in a Triangle II
December 6, 2004 Cevian Triangle
November 29, 2004 Convex Polygon Is the Intersection of Half Planes
November 26, 2004 Pedal Polygons
November 17, 2004 Sierpinski's Gasket and Dihedral Symmetry
November 10, 2004 Rolle's and Mean Value Theorems
November 8, 2004 Addition and Subtraction of Functions
November 5, 2004 The Length of the diagonal of the unit square equals the square root of 2
November 4, 2004 Suan Pan in Various Number Systems
November 3, 2004 Soroban in Various Number Systems
November 2, 2004 Three Similar Polygons
October 31, 2004 Color Cycling on the Mandelbrot Set
October 22, 2004 Venn Diagrams
October 14, 2004 Distributive Law
October 12, 2004 Circles On Cevians
October 9, 2004 Three Similar Triangles II
October 8, 2004 Two Squares and Another Square and Directly Similar Figures
October 6, 2004 Three Similar Triangles
October 5, 2004 Four Circles In a Triangle
October 4, 2004 Monotone Number Sequences
September 28, 2004 Stick Broken Into Three Pieces (Cartesian Coordinates)
September 23, 2004 Proof #44 of the Pythagorean Theorem
September 18, 2004 Equilateral Triangles On Sides of a Parallelogram
September 17, 2004 Anticomplementary Triangle Surprise
September 15, 2004 Three Isosceles Triangles
September 14, 2004 A Tool for Constructing Orthogonal Latin Squares
September 12, 2004 Tangents and Diagonals in Cyclic Quadrilateral
September 10, 2004 Six Circles Theorem (Elkies)
September 9, 2004 Six Circles Theorem (Evelyn)
September 8, 2004 Stick Broken Into Three Pieces (Trilinear Coordinates)
September 5, 2004 Sam Loyd's Son's Dissection
September 4, 2004 Langman's Paradox
September 3, 2004 Curry's Paradox
August 31, 2004 Upgraded Tower of Hanoi
August 29, 2004 Monge via Desargues II
August 28, 2004 Radical Axis and Center, an Application
August 27, 2004 Monge via Desargues
August 25, 2004 Counting Triangles
August 7, 2004 Radical Center
August 6, 2004 Flipping Items Simultaneously II
August 5, 2004 Flipping Items Simultaneously
July 24, 2004 Cevian Nest
July 19, 2004 Wythoff's Nim II
July 18, 2004 Grundy's Game
July 12, 2004 Segment Trisection
July 5, 2004 Upgraded the Farmer and Wife To Catch Rooster and Hen puzzle
June 21, 2004 Upgraded the Kayles game
June 20, 2004 Rouse Ball's Fallacy
June 18, 2004 Four Incident Circles
June 17, 2004 Proizvolov's Identity
June 15, 2004 Plainim Misère
June 12, 2004 Touching Circles
June 9, 2004 Symmedian and the Tangents
June 8, 2004 Symmedian and 2 Antiparallels
June 7, 2004 Symmedian and Antiparallel
June 6, 2004 Three Tangents Theorem
June 5, 2004 A Tangent in Concurrency
June 1, 2004 Chvatal's Art Gallery Theorem
May 30, 2004 According to the Rules
May 18, 2004 Scoring Misère
May 6, 2004 Vecten's Collinearity
April 5, 2004 Inversion in the Incircle
April 2, 2004 Carnot's Theorem
March 28, 2004 Viviani's Theorem
March 27, 2004 Nobbs' Points, Gergonne Line
March 25, 2004 Tromino Puzzle
March 24, 2004 Tiling a Triangulated Hexagon
March 22, 2004 Polygons Formed by Perpendicular Bisectors
March 21, 2004 Quadrilaterals Formed by Perpendicular Bisectors
March 18, 2004 Equilateral Triangles on Sides of a Quadrilateral
March 14, 2004 Four Pegs That Form a Square
March 7, 2004 The Parabola
February 26, 2004 Updated the Twelve Matchsticks Area Puzzle
February 25, 2004 Updated the page on solving xx3 = 3
February 14, 2004 Solution to the BiColor Tower of Hanoi puzzle, by N. Bowler
February 2, 2004 Collinearity in Bicentric Quadrilaterals
February 1, 2004 Projective Collinearity in a Quadrilateral
January 31, 2004 Easy Construction of Bicentric Quadrilateral II
January 30, 2004 Easy Construction of Bicentric Quadrilateral
January 29, 2004 Squares on Sides of a Quadrilateral
January 27, 2004 Three Incircles in a Triangle
January 25, 2004 Two Quadrilaterals
January 24, 2004 Diagonals in a Cyclic Quadrilateral
January 21, 2004 Ceva in Circumscribed Quadrilateral
January 10, 2004 Zaslavsky's theorem
January 4, 2004 Erro Ergo Disco

|Contact| |Front page| |Contents| |Store|

Copyright © 1996-2017 Alexander Bogomolny

 61222405

Search by google: