# 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 |

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