Chronology of Updates

Note: I have placed chronology of updates for 1996, 1997, 1998, 1999, 2000, 2001 and 2002 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 20, 2003	Poles, Polars and Quadrilaterals
December 14, 2003	Twelve Matches Area Puzzle
December 1, 2003	La Hire's Theorem
November 28, 2003	Harmonic Ratio
November 27, 2003	Straight Edge Only Construction of Polar
November 22, 2003	Property of Points Where In- and Excircles Touch a Triangle
November 11, 2003	Rusty Compass Construction of Equilateral Triangle
November 3, 2003	Judd and Müller-Lyer Illusions
October 31, 2003	Mazes
October 22, 2003	Continuous Line Illusion
October 21, 2003	Distorted Lines Illusion
October 14, 2003	Delboeuf Illusion
September 25, 2003	Ponzo Illusion II
September 21, 2003	A Sampling from a Geometry Collection
September 20, 2003	Review of The Changing Shape of Geometry by Chris Pritchard
September 11, 2003	Inversion with Negative Power
September 9, 2003	Squinting Eyes Theorem
September 6, 2003	Friendly Kiepert's Perspectors
September 4, 2003	Bottema's theorem
September 2, 2003	Bride's Chair
August 25, 2003	A significant upgrade of the Four 3's page
August 17, 2003	Iterations on Euler Lines
August 16, 2003	Euler Line Cuts Off Equilateral Triangle
August 15, 2003	Cantor's Theorem
August 14, 2003	Morley's Miracle: An Unexpected Variant
August 11, 2003	Kanizsa Triangle
August 2, 2003	Scintillating Grid Illusion
August 1, 2003	Hermann Grid Illusion
July 31, 2003	Simultaneous Contrast Illusion II
July 27, 2003	4 Travelers problem, solution by M. Branchtein
July 24, 2003	Constructing a triangle from its angle bisectors is in general impossible, by Vladimir Zajic
July 21, 2003	Point common to two similar rectangles
July 17, 2003	Problem in Three Squares
July 5, 2003	Golomb's inductive proof of a tromino theorem
July 2, 2003	Generating Functions
June 29, 2003	Identities in the Multiplication Table
June 28, 2003	Generating Functions
June 27, 2003	Logistic Model applet
June 1, 2003	Wittenbauer's Parallelogram and theorem
May 10, 2003	The Lepidoptera of the Circles
May 7, 2003	Proof #43 of the Pythagorean theorem
May 4, 2003	Two Circles in a Square
April 18, 2003	A Better Butterfly Theorem
April 14, 2003	Averages in a sequence and Math Lotto by Cláudio Buffara and William McWorter, Jr.
April 9, 2003	Proof #42 of the Pythagorean theorem
April 8, 2003	Et tu ...
March 19, 2003	Impossible Fork
March 18, 2003	Revolving Circles Illusion
March 6, 2003	Four Touching Circles
March 4, 2003	Proof #41 of the Pythagorean theorem
March 3, 2003	Ponzo Illusion
March 2, 2003	Day's Sine and Simultaneous Contrast illusions
March 1, 2003	Updated the Lagrange interpolation page
February 28, 2003	Inversion
February 20, 2003	Inversion: Reflection in a Circle
February 19, 2003	Dual to Pappus' Theorem
February 17, 2003	Poncelet's Porism
February 9, 2003	Radical Axis of Circles Inscribed in a Circular Segment
February 8, 2003	Circle Inscribed in a Circular Segment
February 4, 2003	Isogonal Concurrency
February 3, 2003	Maxwell's Theorem
February 2, 2003	Four Incircles Theorem
January 31, 2003	Equal Incircles Theorem
January 30, 2003	Apollonian Gasket
January 29, 2003	Soddy Circles and David Eppstein's Centers
January 28, 2003	Thebault's Problem III
January 27, 2003	Thebault's Problems I and II
January 26, 2003	The Eyeball Theorem
January 25, 2003	Mathematics in Pizzeria
January 24, 2003	Incenters in Cyclic Quadrilateral
January 21, 2003	Computer As a Magician
January 19, 2003	Bachet's Magic Trick
January 16, 2003	Gergonne's Magic Trick
January 15, 2003	Magic in Square
January 6, 2003	Simsons and 9-Point Circles in Cyclic Quadrilateral
January 5, 2003	Remarkable Line in Cyclic Quadrilateral
January 2, 2003	Newton's Theorem and Léon Anne's theorem
January 1, 2003	Centroids in a Polygon

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