Chronology of Updates
Note
I have placed chronology of updates for 1996 , 1997 , 1998 , 1999 and 2000 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 17, 2001
A Case of Similarity
December 16, 2001
Two Triples of Similar Triangles
December 15, 2001
Miquel's Point of a 4-line Via Spiral Similarity
December 14, 2001
Square Inscribed in Triangle
November 20, 2001
Seeing Is Believing
November 12, 2001
Duplication of the Cube
November 3, 2001
9-point Circle as a Locus of Concurrency
October 29, 2001
Brianchon's and Pascal's theorems
October 25, 2001
A Property of Circumscribed Quadrilaterals
October 19, 2001
Necessary and Sufficient
October 14, 2001
Carnot's Theorem
October 13, 2001
Simson Lines Of Diametrically Opposite Points
October 12, 2001
Miquel's Point
October 11, 2001
Simson Line
October 9, 2001
Proof #38 of the Pythagorean Theorem
October 7, 2001
Birds On Wire
October 5, 2001
Proof #37 of the Pythagorean theorem
October 1, 2001
Simson Line From Isogonal Perspective
September 30, 2001
Isogonal image of the circumcircle
September 29, 2001
A major revision of the Triangle's Treasures applet
September 14, 2001
Nine Point Circle
September 13, 2001
Eight Point Circle
September 12, 2001
Four Concurrent Lines in a Cyclic Quadrilateral
September 11, 2001
Brahmagupta's Theorem
September 10, 2001
A Problem of Hinged Squares
September 8, 2001
Countability of Rational Numbers
September 6, 2001
The Theorem of Barbier
August 30, 2001
Star Construction of Shapes of Constant Width
August 28, 2001
Angle Bisectors in a Quadrilateral
August 27, 2001
Pairs of Incircles in a Quadrilateral
August 26, 2001
Arithmetic in Disguise
August 24, 2001
A long overdue Menelaus From Ceva
August 13, 2001
Math Surprises: An Example
August 12, 2001
Balls of Two Colors
August 10, 2001
Buffon's Noodle
August 8, 2001
Problem on a Pentagonal Star
August 7, 2001
Random Clock Hands
August 1, 2001
Diminishing Hopes and Unreliable Witness
July 27, 2001
Counting Triangles and Segments in a Polygon
July 26, 2001
First Proofs
July 19, 2001
Heads and Tails
July 18, 2001
Leibnitz Triangle
June 12, 2001
Parrondo Paradox
May 30, 2001
Tucker Circles
May 28, 2001
Date Game
May 18, 2001
Theorem of Complete Quadrilateral
May 14, 2001
The Hot Game of Nim
May 12, 2001
Subtraction Game
May 6, 2001
The Silver Dollar Game and The Silver Dollar Game With No Silver Dollar
April 20, 2001
Fagnano's Problem, Third Solution
April 19, 2001
Fagnano's Problem In Reverse
April 16, 2001
Taking Games Seriously
March 15, 2001
The Drills To Play
March 10, 2001
A beautiful proof: Symmetries in a Triangle
March 7, 2001
Proofs ## 35 and 36 of the Pythagorean theorem
February 12, 2001
Freaky Links
January 24, 2001
Why Not Geometry?
January 15, 2001
What does one see inside a spherical mirror?
January 14, 2001
A problem with equilateral triangles
Copyright © 1996-2008 Alexander Bogomolny
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